diff --git a/dist/button/index.js b/dist/button/index.js
index e32509e8..22a811ba 100644
--- a/dist/button/index.js
+++ b/dist/button/index.js
@@ -5,7 +5,7 @@ VantComponent({
     mixins: [button, openType],
     classes: ['hover-class', 'loading-class'],
     data: {
-        style: ''
+        baseStyle: ''
     },
     props: {
         icon: String,
@@ -52,8 +52,8 @@ VantComponent({
                         style += `border-color: ${color};`;
                     }
                 }
-                if (style !== this.data.style) {
-                    this.setData({ style });
+                if (style !== this.data.baseStyle) {
+                    this.setData({ baseStyle: style });
                 }
             }
         }
diff --git a/dist/button/index.wxml b/dist/button/index.wxml
index 77b49429..3239354f 100644
--- a/dist/button/index.wxml
+++ b/dist/button/index.wxml
@@ -5,7 +5,7 @@
   class="custom-class {{ utils.bem('button', [type, size, { block, round, plain, square, loading, disabled, hairline, unclickable: disabled || loading }]) }} {{ hairline ? 'van-hairline--surround' : '' }}"
   hover-class="van-button--active hover-class"
   lang="{{ lang }}"
-  style="{{ style }} {{ customStyle }}"
+  style="{{ baseStyle }} {{ customStyle }}"
   open-type="{{ openType }}"
   business-id="{{ businessId }}"
   session-from="{{ sessionFrom }}"
@@ -28,7 +28,7 @@
       custom-class="loading-class"
       size="{{ loadingSize }}"
       type="{{ loadingType }}"
-      color="{{ type === 'default' ? '#c9c9c9' : 'white' }}"
+      color="{{ loadingColor(type,color,plain) }}"
     />
     <view
       wx:if="{{ loadingText }}"
@@ -50,3 +50,19 @@
     </view>
   </block>
 </button>
+
+
+<wxs module="loadingColor">
+function get(type, color,plain) {
+  if(plain) {
+    return color ? color: '#c9c9c9';
+  }
+
+  if(type === 'default') {
+    return '#c9c9c9';
+  }
+  return 'white';
+}
+
+module.exports = get;
+</wxs>
diff --git a/dist/button/index.wxss b/dist/button/index.wxss
index 0d302cb0..5a591fbd 100644
--- a/dist/button/index.wxss
+++ b/dist/button/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-button{position:relative;display:-webkit-inline-flex;display:inline-flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;box-sizing:border-box;padding:0;line-height:20px;text-align:center;vertical-align:middle;-webkit-appearance:none;-webkit-text-size-adjust:100%;height:44px;height:var(--button-default-height,44px);font-size:16px;font-size:var(--button-default-font-size,16px);transition:opacity .2s;transition:opacity var(--animation-duration-fast,.2s);border-radius:2px;border-radius:var(--button-border-radius,2px)}.van-button:before{position:absolute;top:50%;left:50%;width:100%;height:100%;border:inherit;border-radius:inherit;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;content:" ";background-color:#000;background-color:var(--black,#000);border-color:#000;border-color:var(--black,#000)}.van-button:after{border-width:0}.van-button--active:before{opacity:.15}.van-button--unclickable:after{display:none}.van-button--default{color:#323233;color:var(--button-default-color,#323233);background-color:#fff;background-color:var(--button-default-background-color,#fff);border:1px solid #ebedf0;border:1px solid var(--button-default-border-color,#ebedf0)}.van-button--primary{color:#fff;color:var(--button-primary-color,#fff);background-color:#07c160;background-color:var(--button-primary-background-color,#07c160);border:1px solid #07c160;border:1px solid var(--button-primary-border-color,#07c160)}.van-button--info{color:#fff;color:var(--button-info-color,#fff);background-color:#1989fa;background-color:var(--button-info-background-color,#1989fa);border:1px solid #1989fa;border:1px solid var(--button-info-border-color,#1989fa)}.van-button--danger{color:#fff;color:var(--button-danger-color,#fff);background-color:#ee0a24;background-color:var(--button-danger-background-color,#ee0a24);border:1px solid #ee0a24;border:1px solid var(--button-danger-border-color,#ee0a24)}.van-button--warning{color:#fff;color:var(--button-warning-color,#fff);background-color:#ff976a;background-color:var(--button-warning-background-color,#ff976a);border:1px solid #ff976a;border:1px solid var(--button-warning-border-color,#ff976a)}.van-button--plain{background-color:#fff;background-color:var(--button-plain-background-color,#fff)}.van-button--plain.van-button--primary{color:#07c160;color:var(--button-primary-background-color,#07c160)}.van-button--plain.van-button--info{color:#1989fa;color:var(--button-info-background-color,#1989fa)}.van-button--plain.van-button--danger{color:#ee0a24;color:var(--button-danger-background-color,#ee0a24)}.van-button--plain.van-button--warning{color:#ff976a;color:var(--button-warning-background-color,#ff976a)}.van-button--large{width:100%;height:50px;height:var(--button-large-height,50px)}.van-button--normal{padding:0 15px;font-size:14px;font-size:var(--button-normal-font-size,14px)}.van-button--small{min-width:60px;min-width:var(--button-small-min-width,60px);height:30px;height:var(--button-small-height,30px);padding:0 8px;padding:0 var(--padding-xs,8px);font-size:12px;font-size:var(--button-small-font-size,12px)}.van-button--mini{display:inline-block;min-width:50px;min-width:var(--button-mini-min-width,50px);height:22px;height:var(--button-mini-height,22px);font-size:10px;font-size:var(--button-mini-font-size,10px)}.van-button--mini+.van-button--mini{margin-left:5px}.van-button--block{display:-webkit-flex;display:flex;width:100%}.van-button--round{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--square{border-radius:0}.van-button--disabled{opacity:.5;opacity:var(--button-disabled-opacity,.5)}.van-button__text{display:inline}.van-button__icon+.van-button__text:not(:empty),.van-button__loading-text{margin-left:4px}.van-button__icon{min-width:1em;line-height:inherit!important;vertical-align:top}.van-button--hairline{padding-top:1px;border-width:0}.van-button--hairline:after{border-color:inherit;border-width:1px;border-radius:4px;border-radius:calc(var(--button-border-radius, 2px)*2)}.van-button--hairline.van-button--round:after{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--hairline.van-button--square:after{border-radius:0}
\ No newline at end of file
+@import '../common/index.wxss';.van-button{position:relative;display:-webkit-inline-flex;display:inline-flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;box-sizing:border-box;padding:0;text-align:center;vertical-align:middle;-webkit-appearance:none;-webkit-text-size-adjust:100%;height:44px;height:var(--button-default-height,44px);line-height:20px;line-height:var(--button-line-height,20px);font-size:16px;font-size:var(--button-default-font-size,16px);transition:opacity .2s;transition:opacity var(--animation-duration-fast,.2s);border-radius:2px;border-radius:var(--button-border-radius,2px)}.van-button:before{position:absolute;top:50%;left:50%;width:100%;height:100%;border:inherit;border-radius:inherit;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;content:" ";background-color:#000;background-color:var(--black,#000);border-color:#000;border-color:var(--black,#000)}.van-button:after{border-width:0}.van-button--active:before{opacity:.15}.van-button--unclickable:after{display:none}.van-button--default{color:#323233;color:var(--button-default-color,#323233);background:#fff;background:var(--button-default-background-color,#fff);border:1px solid #ebedf0;border:var(--button-border-width,1px) solid var(--button-default-border-color,#ebedf0)}.van-button--primary{color:#fff;color:var(--button-primary-color,#fff);background:#07c160;background:var(--button-primary-background-color,#07c160);border:1px solid #07c160;border:var(--button-border-width,1px) solid var(--button-primary-border-color,#07c160)}.van-button--info{color:#fff;color:var(--button-info-color,#fff);background:#1989fa;background:var(--button-info-background-color,#1989fa);border:1px solid #1989fa;border:var(--button-border-width,1px) solid var(--button-info-border-color,#1989fa)}.van-button--danger{color:#fff;color:var(--button-danger-color,#fff);background:#ee0a24;background:var(--button-danger-background-color,#ee0a24);border:1px solid #ee0a24;border:var(--button-border-width,1px) solid var(--button-danger-border-color,#ee0a24)}.van-button--warning{color:#fff;color:var(--button-warning-color,#fff);background:#ff976a;background:var(--button-warning-background-color,#ff976a);border:1px solid #ff976a;border:var(--button-border-width,1px) solid var(--button-warning-border-color,#ff976a)}.van-button--plain{background:#fff;background:var(--button-plain-background-color,#fff)}.van-button--plain.van-button--primary{color:#07c160;color:var(--button-primary-background-color,#07c160)}.van-button--plain.van-button--info{color:#1989fa;color:var(--button-info-background-color,#1989fa)}.van-button--plain.van-button--danger{color:#ee0a24;color:var(--button-danger-background-color,#ee0a24)}.van-button--plain.van-button--warning{color:#ff976a;color:var(--button-warning-background-color,#ff976a)}.van-button--large{width:100%;height:50px;height:var(--button-large-height,50px)}.van-button--normal{padding:0 15px;font-size:14px;font-size:var(--button-normal-font-size,14px)}.van-button--small{min-width:60px;min-width:var(--button-small-min-width,60px);height:30px;height:var(--button-small-height,30px);padding:0 8px;padding:0 var(--padding-xs,8px);font-size:12px;font-size:var(--button-small-font-size,12px)}.van-button--mini{display:inline-block;min-width:50px;min-width:var(--button-mini-min-width,50px);height:22px;height:var(--button-mini-height,22px);font-size:10px;font-size:var(--button-mini-font-size,10px)}.van-button--mini+.van-button--mini{margin-left:5px}.van-button--block{display:-webkit-flex;display:flex;width:100%}.van-button--round{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--square{border-radius:0}.van-button--disabled{opacity:.5;opacity:var(--button-disabled-opacity,.5)}.van-button__text{display:inline}.van-button__icon+.van-button__text:not(:empty),.van-button__loading-text{margin-left:4px}.van-button__icon{min-width:1em;line-height:inherit!important;vertical-align:top}.van-button--hairline{padding-top:1px;border-width:0}.van-button--hairline:after{border-color:inherit;border-width:1px;border-radius:4px;border-radius:calc(var(--button-border-radius, 2px)*2)}.van-button--hairline.van-button--round:after{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--hairline.van-button--square:after{border-radius:0}
\ No newline at end of file
diff --git a/dist/card/index.js b/dist/card/index.js
index ae641517..48383b8f 100644
--- a/dist/card/index.js
+++ b/dist/card/index.js
@@ -16,7 +16,10 @@ VantComponent({
         desc: String,
         thumb: String,
         title: String,
-        price: String,
+        price: {
+            type: String,
+            observer: 'updatePrice'
+        },
         centered: Boolean,
         lazyLoad: Boolean,
         thumbLink: String,
@@ -31,6 +34,14 @@ VantComponent({
         }
     },
     methods: {
+        updatePrice() {
+            const { price } = this.data;
+            const priceArr = price.toString().split('.');
+            this.setData({
+                integerStr: priceArr[0],
+                decimalStr: priceArr[1] ? `.${priceArr[1]}` : '',
+            });
+        },
         onClickThumb() {
             this.jumpLink('thumbLink');
         }
diff --git a/dist/card/index.wxml b/dist/card/index.wxml
index a17b1d62..548c810d 100644
--- a/dist/card/index.wxml
+++ b/dist/card/index.wxml
@@ -21,17 +21,20 @@
       </van-tag>
     </view>
 
-    <view class="van-card__content">
-      <view wx:if="{{ title }}" class="van-card__title title-class">{{ title }}</view>
-      <slot wx:else name="title" />
+    <view class="van-card__content {{ utils.bem('card__content', { center: centered }) }}">
+      <view>
+        <view wx:if="{{ title }}" class="van-card__title title-class">{{ title }}</view>
+        <slot wx:else name="title" />
 
-      <view wx:if="{{ desc }}" class="van-card__desc desc-class">{{ desc }}</view>
-      <slot wx:else name="desc" />
+        <view wx:if="{{ desc }}" class="van-card__desc desc-class">{{ desc }}</view>
+        <slot wx:else name="desc" />
 
-      <slot name="tags" />
+        <slot name="tags" />
+      </view>
 
       <view class="van-card__bottom">
-        <view wx:if="{{ price || price === 0 }}" class="van-card__price price-class">{{ currency }} {{ price }}</view>
+        <slot name="price-top" />
+        <view wx:if="{{ price || price === 0 }}" class="van-card__price price-class">{{ currency }}<text class="van-card__price-integer">{{ integerStr }}</text><text class="van-card__price-decimal">{{ decimalStr }}</text></view>
         <view wx:if="{{ originPrice || originPrice === 0 }}" class="van-card__origin-price origin-price-class">{{ currency }} {{ originPrice }}</view>
         <view wx:if="{{ num }}" class="van-card__num num-class">x {{ num }}</view>
         <slot name="bottom" />
diff --git a/dist/card/index.wxss b/dist/card/index.wxss
index 8e86e452..0a90c3c3 100644
--- a/dist/card/index.wxss
+++ b/dist/card/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-card{position:relative;box-sizing:border-box;padding:8px 16px;padding:var(--card-padding,8px 16px);font-size:12px;font-size:var(--card-font-size,12px);color:#323233;color:var(--card-text-color,#323233);background-color:#fafafa;background-color:var(--card-background-color,#fafafa)}.van-card__header{display:-webkit-flex;display:flex}.van-card__header--center{-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center}.van-card__thumb{position:relative;-webkit-flex:none;flex:none;width:90px;width:var(--card-thumb-size,90px);height:90px;height:var(--card-thumb-size,90px);margin-right:8px;margin-right:var(--padding-xs,8px)}.van-card__thumb:empty{display:none}.van-card__img{width:100%;height:100%}.van-card__content{position:relative;-webkit-flex:1;flex:1;min-width:0}.van-card__desc,.van-card__title{word-wrap:break-word}.van-card__title{font-weight:700;line-height:16px;line-height:var(--card-title-line-height,16px)}.van-card__desc{line-height:20px;line-height:var(--card-desc-line-height,20px);color:#646566;color:var(--card-desc-color,#646566)}.van-card__bottom{line-height:20px}.van-card__price{display:inline-block;font-weight:700;color:#ee0a24;color:var(--card-price-color,#ee0a24)}.van-card__origin-price{display:inline-block;margin-left:5px;text-decoration:line-through;font-size:10px;font-size:var(--card-origin-price-font-size,10px);color:#646566;color:var(--card-origin-price-color,#646566)}.van-card__num{float:right}.van-card__tag{position:absolute;top:2px;left:0}.van-card__footer{-webkit-flex:none;flex:none;width:100%;text-align:right}
\ No newline at end of file
+@import '../common/index.wxss';.van-card{position:relative;box-sizing:border-box;padding:8px 16px;padding:var(--card-padding,8px 16px);font-size:12px;font-size:var(--card-font-size,12px);color:#323233;color:var(--card-text-color,#323233);background-color:#fafafa;background-color:var(--card-background-color,#fafafa)}.van-card__header{display:-webkit-flex;display:flex}.van-card__header--center{-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center}.van-card__thumb{position:relative;-webkit-flex:none;flex:none;width:88px;width:var(--card-thumb-size,88px);height:88px;height:var(--card-thumb-size,88px);margin-right:8px;margin-right:var(--padding-xs,8px)}.van-card__thumb:empty{display:none}.van-card__img{width:100%;height:100%;border-radius:8px;border-radius:var(--border-radius-lg,8px)}.van-card__content{position:relative;display:-webkit-flex;display:flex;-webkit-flex:1;flex:1;-webkit-flex-direction:column;flex-direction:column;-webkit-justify-content:space-between;justify-content:space-between;min-width:0;min-height:88px;min-height:var(--card-thumb-size,88px)}.van-card__content--center{-webkit-justify-content:center;justify-content:center}.van-card__desc,.van-card__title{word-wrap:break-word}.van-card__title{font-weight:700;line-height:16px;line-height:var(--card-title-line-height,16px)}.van-card__desc{line-height:20px;line-height:var(--card-desc-line-height,20px);color:#646566;color:var(--card-desc-color,#646566)}.van-card__bottom{line-height:20px}.van-card__price{display:inline-block;font-weight:700;color:#ee0a24;color:var(--card-price-color,#ee0a24);font-size:12px;font-size:var(--card-price-font-size,12px)}.van-card__price-integer{font-size:16px;font-size:var(--card-price-integer-font-size,16px)}.van-card__price-decimal,.van-card__price-integer{font-family:Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif;font-family:var(--card-price-font-family,Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif)}.van-card__origin-price{display:inline-block;margin-left:5px;text-decoration:line-through;font-size:10px;font-size:var(--card-origin-price-font-size,10px);color:#646566;color:var(--card-origin-price-color,#646566)}.van-card__num{float:right}.van-card__tag{position:absolute;top:2px;left:0}.van-card__footer{-webkit-flex:none;flex:none;width:100%;text-align:right}
\ No newline at end of file
diff --git a/dist/checkbox-group/index.js b/dist/checkbox-group/index.js
index 92438e79..bc90d74a 100644
--- a/dist/checkbox-group/index.js
+++ b/dist/checkbox-group/index.js
@@ -4,14 +4,10 @@ VantComponent({
     relation: {
         name: 'checkbox',
         type: 'descendant',
+        current: 'checkbox-group',
         linked(target) {
-            this.children = this.children || [];
-            this.children.push(target);
             this.updateChild(target);
         },
-        unlinked(target) {
-            this.children = this.children.filter((child) => child !== target);
-        }
     },
     props: {
         max: Number,
@@ -32,7 +28,7 @@ VantComponent({
             const { value, disabled } = this.data;
             child.setData({
                 value: value.indexOf(child.data.name) !== -1,
-                disabled: disabled || child.data.disabled
+                parentDisabled: disabled
             });
         }
     }
diff --git a/dist/checkbox/index.js b/dist/checkbox/index.js
index 4810123a..db5b551e 100644
--- a/dist/checkbox/index.js
+++ b/dist/checkbox/index.js
@@ -8,12 +8,7 @@ VantComponent({
     relation: {
         name: 'checkbox-group',
         type: 'ancestor',
-        linked(target) {
-            this.parent = target;
-        },
-        unlinked() {
-            this.parent = null;
-        }
+        current: 'checkbox',
     },
     classes: ['icon-class', 'label-class'],
     props: {
@@ -32,6 +27,9 @@ VantComponent({
             value: 20
         }
     },
+    data: {
+        parentDisabled: false
+    },
     methods: {
         emitChange(value) {
             if (this.parent) {
@@ -42,14 +40,14 @@ VantComponent({
             }
         },
         toggle() {
-            const { disabled, value } = this.data;
-            if (!disabled) {
+            const { parentDisabled, disabled, value } = this.data;
+            if (!disabled && !parentDisabled) {
                 this.emitChange(!value);
             }
         },
         onClickLabel() {
-            const { labelDisabled, disabled, value } = this.data;
-            if (!disabled && !labelDisabled) {
+            const { labelDisabled, parentDisabled, disabled, value } = this.data;
+            if (!disabled && !labelDisabled && !parentDisabled) {
                 this.emitChange(!value);
             }
         },
diff --git a/dist/checkbox/index.wxml b/dist/checkbox/index.wxml
index 19a89260..94789d81 100644
--- a/dist/checkbox/index.wxml
+++ b/dist/checkbox/index.wxml
@@ -1,4 +1,5 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
+<wxs src="./index.wxs" module="computed" />
 
 <view class="van-checkbox custom-class">
   <view class="van-checkbox__icon-wrap" bindtap="toggle">
@@ -7,13 +8,13 @@
       wx:else
       name="success"
       size="0.8em"
-      class="{{ utils.bem('checkbox__icon', [shape, { disabled, checked: value }]) }}"
-      style="font-size: {{ utils.addUnit(iconSize) }};{{ checkedColor && value && !disabled ? 'border-color:' + checkedColor + '; background-color:' + checkedColor : '' }}"
+      class="{{ utils.bem('checkbox__icon', [shape, { disabled: disabled || parentDisabled, checked: value }]) }}"
+      style="{{ computed.iconStyle(checkedColor, value, disabled, parentDisabled, iconSize) }}"
       custom-class="icon-class"
       custom-style="line-height: 1.25em;"
     />
   </view>
-  <view class="label-class {{ utils.bem('checkbox__label', [labelPosition, { disabled }]) }}" bindtap="onClickLabel">
+  <view class="label-class {{ utils.bem('checkbox__label', [labelPosition, { disabled: disabled || parentDisabled }]) }}" bindtap="onClickLabel">
     <slot />
   </view>
 </view>
diff --git a/dist/checkbox/index.wxs b/dist/checkbox/index.wxs
new file mode 100644
index 00000000..927eb55d
--- /dev/null
+++ b/dist/checkbox/index.wxs
@@ -0,0 +1,20 @@
+/* eslint-disable */
+var utils = require('../wxs/utils.wxs');
+
+function iconStyle(checkedColor, value, disabled, parentDisabled, iconSize) {
+  var styles = [['font-size', utils.addUnit(iconSize)]];
+  if (checkedColor && value && !disabled && !parentDisabled) {
+    styles.push(['border-color', checkedColor]);
+    styles.push(['background-color', checkedColor]);
+  }
+
+  return styles
+    .map(function(item) {
+      return item.join(':');
+    })
+    .join(';');
+}
+
+module.exports = {
+  iconStyle: iconStyle
+};
diff --git a/dist/col/index.js b/dist/col/index.js
index 2d1d85ee..ec12aa9a 100644
--- a/dist/col/index.js
+++ b/dist/col/index.js
@@ -2,21 +2,22 @@ import { VantComponent } from '../common/component';
 VantComponent({
     relation: {
         name: 'row',
-        type: 'ancestor'
+        type: 'ancestor',
+        current: 'col',
     },
     props: {
         span: Number,
         offset: Number
     },
     data: {
-        style: ''
+        viewStyle: ''
     },
     methods: {
         setGutter(gutter) {
             const padding = `${gutter / 2}px`;
-            const style = gutter ? `padding-left: ${padding}; padding-right: ${padding};` : '';
-            if (style !== this.data.style) {
-                this.setData({ style });
+            const viewStyle = gutter ? `padding-left: ${padding}; padding-right: ${padding};` : '';
+            if (viewStyle !== this.data.viewStyle) {
+                this.setData({ viewStyle });
             }
         }
     }
diff --git a/dist/col/index.wxml b/dist/col/index.wxml
index a759aac5..52544f09 100644
--- a/dist/col/index.wxml
+++ b/dist/col/index.wxml
@@ -2,7 +2,7 @@
 
 <view
   class="custom-class {{ utils.bem('col', [span]) }} {{ offset ? 'van-col--offset-' + offset : '' }}"
-  style="{{ style }}"
+  style="{{ viewStyle }}"
 >
   <slot />
 </view>
diff --git a/dist/collapse-item/index.js b/dist/collapse-item/index.js
index a869be00..7953f351 100644
--- a/dist/collapse-item/index.js
+++ b/dist/collapse-item/index.js
@@ -5,9 +5,7 @@ VantComponent({
     relation: {
         name: 'collapse',
         type: 'ancestor',
-        linked(parent) {
-            this.parent = parent;
-        }
+        current: 'collapse-item',
     },
     props: {
         name: null,
diff --git a/dist/collapse/index.js b/dist/collapse/index.js
index c6efb6ab..fc61f1c1 100644
--- a/dist/collapse/index.js
+++ b/dist/collapse/index.js
@@ -3,12 +3,7 @@ VantComponent({
     relation: {
         name: 'collapse-item',
         type: 'descendant',
-        linked(child) {
-            this.children.push(child);
-        },
-        unlinked(child) {
-            this.children = this.children.filter((item) => item !== child);
-        }
+        current: 'collapse',
     },
     props: {
         value: {
@@ -24,9 +19,6 @@ VantComponent({
             value: true
         }
     },
-    beforeCreate() {
-        this.children = [];
-    },
     methods: {
         updateExpanded() {
             this.children.forEach((child) => {
diff --git a/dist/common/component.js b/dist/common/component.js
index 6588f4f5..0f2b8ff0 100644
--- a/dist/common/component.js
+++ b/dist/common/component.js
@@ -1,4 +1,23 @@
 import { basic } from '../mixins/basic';
+const relationFunctions = {
+    ancestor: {
+        linked(parent) {
+            this.parent = parent;
+        },
+        unlinked() {
+            this.parent = null;
+        },
+    },
+    descendant: {
+        linked(child) {
+            this.children = this.children || [];
+            this.children.push(child);
+        },
+        unlinked(child) {
+            this.children = (this.children || []).filter(it => it !== child);
+        },
+    },
+};
 function mapKeys(source, target, map) {
     Object.keys(map).forEach(key => {
         if (source[key]) {
@@ -6,6 +25,36 @@ function mapKeys(source, target, map) {
         }
     });
 }
+function makeRelation(options, vantOptions, relation) {
+    const { type, name, linked, unlinked, linkChanged } = relation;
+    const { beforeCreate, destroyed } = vantOptions;
+    if (type === 'descendant') {
+        options.created = function () {
+            beforeCreate && beforeCreate.bind(this)();
+            this.children = this.children || [];
+        };
+        options.detached = function () {
+            this.children = [];
+            destroyed && destroyed.bind(this)();
+        };
+    }
+    options.relations = Object.assign(options.relations || {}, {
+        [`../${name}/index`]: {
+            type,
+            linked(node) {
+                relationFunctions[type].linked.bind(this)(node);
+                linked && linked.bind(this)(node);
+            },
+            linkChanged(node) {
+                linkChanged && linkChanged.bind(this)(node);
+            },
+            unlinked(node) {
+                relationFunctions[type].unlinked.bind(this)(node);
+                unlinked && unlinked.bind(this)(node);
+            },
+        }
+    });
+}
 function VantComponent(vantOptions = {}) {
     const options = {};
     mapKeys(vantOptions, options, {
@@ -22,9 +71,7 @@ function VantComponent(vantOptions = {}) {
     });
     const { relation } = vantOptions;
     if (relation) {
-        options.relations = Object.assign(options.relations || {}, {
-            [`../${relation.name}/index`]: relation
-        });
+        makeRelation(options, vantOptions, relation);
     }
     // add default externalClasses
     options.externalClasses = options.externalClasses || [];
diff --git a/dist/definitions/index.d.ts b/dist/definitions/index.d.ts
index c9fc4f30..fadb5b21 100644
--- a/dist/definitions/index.d.ts
+++ b/dist/definitions/index.d.ts
@@ -13,7 +13,9 @@ export interface VantComponentOptions<Data, Props, Methods, Instance> {
     mixins?: string[];
     props?: Props & Weapp.PropertyOption;
     relation?: Weapp.RelationOption<Instance> & {
+        type: 'ancestor' | 'descendant';
         name: string;
+        current: string;
     };
     relations?: {
         [componentName: string]: Weapp.RelationOption<Instance>;
diff --git a/dist/dropdown-item/index.js b/dist/dropdown-item/index.js
index f2b6c481..b6807563 100644
--- a/dist/dropdown-item/index.js
+++ b/dist/dropdown-item/index.js
@@ -4,13 +4,10 @@ VantComponent({
     relation: {
         name: 'dropdown-menu',
         type: 'ancestor',
-        linked(target) {
-            this.parent = target;
+        current: 'dropdown-item',
+        linked() {
             this.updateDataFromParent();
         },
-        unlinked() {
-            this.parent = null;
-        }
     },
     props: {
         value: {
@@ -65,6 +62,7 @@ VantComponent({
             const { value } = option;
             const shouldEmitChange = this.data.value !== value;
             this.setData({ showPopup: false, value });
+            this.$emit('close');
             setTimeout(() => {
                 this.setData({ showWrapper: false });
             }, this.data.duration || 0);
diff --git a/dist/dropdown-menu/index.js b/dist/dropdown-menu/index.js
index 889387be..c5fe0b1a 100644
--- a/dist/dropdown-menu/index.js
+++ b/dist/dropdown-menu/index.js
@@ -6,12 +6,11 @@ VantComponent({
     relation: {
         name: 'dropdown-item',
         type: 'descendant',
-        linked(target) {
-            this.children.push(target);
+        current: 'dropdown-menu',
+        linked() {
             this.updateItemListData();
         },
-        unlinked(target) {
-            this.children = this.children.filter((child) => child !== target);
+        unlinked() {
             this.updateItemListData();
         }
     },
@@ -55,7 +54,6 @@ VantComponent({
     beforeCreate() {
         const { windowHeight } = wx.getSystemInfoSync();
         this.windowHeight = windowHeight;
-        this.children = [];
         ARRAY.push(this);
     },
     destroyed() {
diff --git a/dist/goods-action-button/index.js b/dist/goods-action-button/index.js
index 5f5836dd..513d9214 100644
--- a/dist/goods-action-button/index.js
+++ b/dist/goods-action-button/index.js
@@ -7,9 +7,7 @@ VantComponent({
     relation: {
         type: 'ancestor',
         name: 'goods-action',
-        linked(parent) {
-            this.parent = parent;
-        }
+        current: 'goods-action-button',
     },
     props: {
         text: String,
@@ -34,13 +32,8 @@ VantComponent({
             const { children = [] } = this.parent;
             const { length } = children;
             const index = children.indexOf(this);
-            let rightBorderLess = false;
-            if (length > 1) {
-                rightBorderLess = index !== length - 1;
-            }
             this.setData({
                 isFirst: index === 0,
-                rightBorderLess,
                 isLast: index === length - 1
             });
         }
diff --git a/dist/goods-action-button/index.wxml b/dist/goods-action-button/index.wxml
index 392b96d9..3912cedb 100644
--- a/dist/goods-action-button/index.wxml
+++ b/dist/goods-action-button/index.wxml
@@ -1,6 +1,5 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 <van-button
-  square
   id="{{ id }}"
   lang="{{ lang }}"
   type="{{ type }}"
@@ -9,7 +8,8 @@
   loading="{{ loading }}"
   disabled="{{ disabled }}"
   open-type="{{ openType }}"
-  custom-class="{{ utils.bem('goods-action-button', [type, { first: isFirst, last: isLast, plain : plain, ordinary: !plain }])}} {{ rightBorderLess ?'van-goods-action-button--no-right-border': ''}}"
+  class="{{ utils.bem('goods-action-button', [type, { first: isFirst, last: isLast, plain: plain }])}}"
+  custom-class="van-goods-action-button__inner"
   business-id="{{ businessId }}"
   session-from="{{ sessionFrom }}"
   app-parameter="{{ appParameter }}"
@@ -26,4 +26,5 @@
   bindlaunchapp="bindLaunchApp"
 >
   {{ text }}
+  <slot></slot>
 </van-button>
diff --git a/dist/goods-action-button/index.wxss b/dist/goods-action-button/index.wxss
index c37f9b07..6577316b 100644
--- a/dist/goods-action-button/index.wxss
+++ b/dist/goods-action-button/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';:host{-webkit-flex:1;flex:1}.van-goods-action-button{height:40px!important;height:var(--goods-action-button-height,40px)!important;font-weight:500!important;font-weight:var(--font-weight-bold,500)!important;line-height:40px!important;line-height:var(--goods-action-button-height,40px)!important}.van-goods-action-button--first{display:block!important;margin-left:5px;border-top-left-radius:20px!important;border-top-left-radius:var(--goods-action-button-border-radius,20px)!important;border-bottom-left-radius:20px!important;border-bottom-left-radius:var(--goods-action-button-border-radius,20px)!important}.van-goods-action-button--last{display:block!important;margin-right:5px;border-top-right-radius:20px!important;border-top-right-radius:var(--goods-action-button-border-radius,20px)!important;border-bottom-right-radius:20px!important;border-bottom-right-radius:var(--goods-action-button-border-radius,20px)!important}.van-goods-action-button--warning{background:linear-gradient(90deg,#ffd01e,#ff8917);background:var(--goods-action-button-warning-color,linear-gradient(90deg,#ffd01e,#ff8917))}.van-goods-action-button--danger{background:linear-gradient(90deg,#ff6034,#ee0a24);background:var(--goods-action-button-danger-color,linear-gradient(90deg,#ff6034,#ee0a24))}.van-goods-action-button--ordinary{border:none!important}.van-goods-action-button--plain{background:#fff;background:var(--goods-action-button-plain-color,#fff)}.van-goods-action-button--no-right-border{border-right-width:0!important}@media (max-width:321px){.van-goods-action-button{font-size:13px}}
\ No newline at end of file
+@import '../common/index.wxss';:host{-webkit-flex:1;flex:1}.van-goods-action-button{--button-warning-background-color:linear-gradient(90deg,#ffd01e,#ff8917);--button-warning-background-color:var(--goods-action-button-warning-color,linear-gradient(90deg,#ffd01e,#ff8917));--button-danger-background-color:linear-gradient(90deg,#ff6034,#ee0a24);--button-danger-background-color:var(--goods-action-button-danger-color,linear-gradient(90deg,#ff6034,#ee0a24));--button-default-height:40px;--button-default-height:var(--goods-action-button-height,40px);--button-line-height:40px;--button-line-height:var(--goods-action-button-height,40px);--button-plain-background-color:#fff;--button-plain-background-color:var(--goods-action-button-plain-color,#fff);display:block;--button-border-width:0}.van-goods-action-button--first{margin-left:5px;--button-border-radius:20px 0 0 20px;--button-border-radius:var(--goods-action-button-border-radius,20px) 0 0 var(--goods-action-button-border-radius,20px)}.van-goods-action-button--last{margin-right:5px;--button-border-radius:0 20px 20px 0;--button-border-radius:0 var(--goods-action-button-border-radius,20px) var(--goods-action-button-border-radius,20px) 0}.van-goods-action-button--plain{--button-border-width:1px}.van-goods-action-button__inner{width:100%;font-weight:500!important;font-weight:var(--font-weight-bold,500)!important}@media (max-width:321px){.van-goods-action-button{font-size:13px}}
\ No newline at end of file
diff --git a/dist/goods-action/index.js b/dist/goods-action/index.js
index 4a07ba81..a0f36f57 100644
--- a/dist/goods-action/index.js
+++ b/dist/goods-action/index.js
@@ -3,15 +3,7 @@ VantComponent({
     relation: {
         type: 'descendant',
         name: 'goods-action-button',
-        linked(child) {
-            this.children.push(child);
-        },
-        unlinked(child) {
-            this.children = this.children.filter((item) => item !== child);
-        }
-    },
-    beforeCreate() {
-        this.children = [];
+        current: 'goods-action',
     },
     props: {
         safeAreaInsetBottom: {
diff --git a/dist/grid-item/index.js b/dist/grid-item/index.js
index 756996cb..f42ce04d 100644
--- a/dist/grid-item/index.js
+++ b/dist/grid-item/index.js
@@ -5,9 +5,7 @@ VantComponent({
     relation: {
         name: 'grid',
         type: 'ancestor',
-        linked(parent) {
-            this.parent = parent;
-        }
+        current: 'grid-item',
     },
     mixins: [link],
     props: {
@@ -17,6 +15,9 @@ VantComponent({
         text: String,
         useSlot: Boolean
     },
+    data: {
+        viewStyle: '',
+    },
     mounted() {
         this.updateStyle();
     },
@@ -51,7 +52,7 @@ VantComponent({
         `;
             }
             this.setData({
-                style: styleWrapper.join('; '),
+                viewStyle: styleWrapper.join('; '),
                 contentStyle,
                 center,
                 border,
diff --git a/dist/grid-item/index.wxml b/dist/grid-item/index.wxml
index 2fb189b8..23b61c19 100644
--- a/dist/grid-item/index.wxml
+++ b/dist/grid-item/index.wxml
@@ -1,6 +1,6 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 
-<view class="{{ utils.bem('grid-item', { square }) }}" style="{{ style }}" bindtap="onClick">
+<view class="{{ utils.bem('grid-item', { square }) }}" style="{{ viewStyle }}" bindtap="onClick">
   <view
     class="{{ utils.bem('grid-item__content', { center, square, clickable, surround: border && gutter }) }} {{ border ? 'van-hairline--surround' : '' }}"
     style="{{ contentStyle }}"
diff --git a/dist/grid/index.js b/dist/grid/index.js
index 97f3eb08..a56af1d0 100644
--- a/dist/grid/index.js
+++ b/dist/grid/index.js
@@ -4,12 +4,7 @@ VantComponent({
     relation: {
         name: 'grid-item',
         type: 'descendant',
-        linked(child) {
-            this.children.push(child);
-        },
-        unlinked(child) {
-            this.children = this.children.filter((item) => item !== child);
-        }
+        current: 'grid',
     },
     props: {
         square: {
@@ -41,14 +36,14 @@ VantComponent({
             observer: 'updateChildren'
         }
     },
-    beforeCreate() {
-        this.children = [];
+    data: {
+        viewStyle: '',
     },
     created() {
         const { gutter } = this.data;
         if (gutter) {
             this.setData({
-                style: `padding-left: ${addUnit(gutter)}`
+                viewStyle: `padding-left: ${addUnit(gutter)}`
             });
         }
     },
diff --git a/dist/grid/index.wxml b/dist/grid/index.wxml
index fc76cc30..d40322a2 100644
--- a/dist/grid/index.wxml
+++ b/dist/grid/index.wxml
@@ -1,3 +1,3 @@
-<view class="van-grid {{ border && !gutter ? 'van-hairline--top' : '' }}" style="{{ style }}">
+<view class="van-grid {{ border && !gutter ? 'van-hairline--top' : '' }}" style="{{ viewStyle }}">
   <slot />
 </view>
diff --git a/dist/image/index.js b/dist/image/index.js
index 61a6bb75..b7a6d9e0 100644
--- a/dist/image/index.js
+++ b/dist/image/index.js
@@ -51,7 +51,8 @@ VantComponent({
     },
     data: {
         error: false,
-        loading: true
+        loading: true,
+        viewStyle: '',
     },
     mounted() {
         this.setMode();
@@ -76,7 +77,7 @@ VantComponent({
                 style += 'overflow: hidden;';
                 style += `border-radius: ${addUnit(radius)};`;
             }
-            this.setData({ style });
+            this.setData({ viewStyle: style });
         },
         onLoad(event) {
             this.setData({
diff --git a/dist/image/index.wxml b/dist/image/index.wxml
index 4724ca22..6450ba14 100644
--- a/dist/image/index.wxml
+++ b/dist/image/index.wxml
@@ -1,7 +1,7 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 
 <view
-  style="{{ style }}"
+  style="{{ viewStyle }}"
   class="custom-class {{ utils.bem('image', { round })}}"
   bind:tap="onClick"
 >
diff --git a/dist/index-anchor/index.js b/dist/index-anchor/index.js
index caaf1911..0e9d1756 100644
--- a/dist/index-anchor/index.js
+++ b/dist/index-anchor/index.js
@@ -3,12 +3,7 @@ VantComponent({
     relation: {
         name: 'index-bar',
         type: 'ancestor',
-        linked(target) {
-            this.parent = target;
-        },
-        unlinked() {
-            this.parent = null;
-        }
+        current: 'index-anchor',
     },
     props: {
         useSlot: Boolean,
diff --git a/dist/index-bar/index.js b/dist/index-bar/index.js
index 453a443f..8bd9f8d7 100644
--- a/dist/index-bar/index.js
+++ b/dist/index-bar/index.js
@@ -12,6 +12,7 @@ VantComponent({
     relation: {
         name: 'index-anchor',
         type: 'descendant',
+        current: 'index-bar',
         linked() {
             this.updateData();
         },
diff --git a/dist/loading/index.js b/dist/loading/index.js
index 6f109725..f5be7ad4 100644
--- a/dist/loading/index.js
+++ b/dist/loading/index.js
@@ -9,5 +9,8 @@ VantComponent({
         },
         size: String,
         textSize: String
-    }
+    },
+    data: {
+        array12: Array.from({ length: 12 }),
+    },
 });
diff --git a/dist/loading/index.wxml b/dist/loading/index.wxml
index 25016e55..e934288b 100644
--- a/dist/loading/index.wxml
+++ b/dist/loading/index.wxml
@@ -7,7 +7,7 @@
   >
     <view
       wx:if="{{ type === 'spinner' }}"
-      wx:for="item in 12"
+      wx:for="{{ array12 }}"
       wx:key="index"
       class="van-loading__dot"
     />
diff --git a/dist/notify/index.js b/dist/notify/index.js
index 4ba095cd..50ea385d 100644
--- a/dist/notify/index.js
+++ b/dist/notify/index.js
@@ -25,6 +25,9 @@ VantComponent({
             value: false
         }
     },
+    data: {
+        show: false,
+    },
     created() {
         const { statusBarHeight } = wx.getSystemInfoSync();
         this.setData({ statusBarHeight });
diff --git a/dist/radio-group/index.js b/dist/radio-group/index.js
index e4c69e3c..2fa6c250 100644
--- a/dist/radio-group/index.js
+++ b/dist/radio-group/index.js
@@ -4,14 +4,10 @@ VantComponent({
     relation: {
         name: 'radio',
         type: 'descendant',
+        current: 'radio-group',
         linked(target) {
-            this.children = this.children || [];
-            this.children.push(target);
             this.updateChild(target);
         },
-        unlinked(target) {
-            this.children = this.children.filter((child) => child !== target);
-        }
     },
     props: {
         value: {
diff --git a/dist/radio/index.js b/dist/radio/index.js
index 983cde0f..58074092 100644
--- a/dist/radio/index.js
+++ b/dist/radio/index.js
@@ -4,12 +4,7 @@ VantComponent({
     relation: {
         name: 'radio-group',
         type: 'ancestor',
-        linked(target) {
-            this.parent = target;
-        },
-        unlinked() {
-            this.parent = null;
-        }
+        current: 'radio',
     },
     classes: ['icon-class', 'label-class'],
     props: {
diff --git a/dist/rate/index.js b/dist/rate/index.js
index c5953128..4efefda0 100644
--- a/dist/rate/index.js
+++ b/dist/rate/index.js
@@ -37,7 +37,10 @@ VantComponent({
         },
         count: {
             type: Number,
-            value: 5
+            value: 5,
+            observer(value) {
+                this.setData({ innerCountArray: Array.from({ length: value }) });
+            },
         },
         gutter: null,
         touchable: {
@@ -46,7 +49,8 @@ VantComponent({
         }
     },
     data: {
-        innerValue: 0
+        innerValue: 0,
+        innerCountArray: Array.from({ length: 5 }),
     },
     methods: {
         onSelect(event) {
diff --git a/dist/rate/index.wxml b/dist/rate/index.wxml
index 9233c10a..58eee5cd 100644
--- a/dist/rate/index.wxml
+++ b/dist/rate/index.wxml
@@ -6,7 +6,7 @@
 >
   <view
     class="van-rate__item"
-    wx:for="{{ count }}"
+    wx:for="{{ innerCountArray }}"
     wx:key="index"
     style="padding-right: {{ index !== count - 1 ? utils.addUnit(gutter) : '' }}"
   >
diff --git a/dist/row/index.js b/dist/row/index.js
index 420651ce..72d60064 100644
--- a/dist/row/index.js
+++ b/dist/row/index.js
@@ -3,6 +3,7 @@ VantComponent({
     relation: {
         name: 'col',
         type: 'descendant',
+        current: 'row',
         linked(target) {
             if (this.data.gutter) {
                 target.setGutter(this.data.gutter);
@@ -15,6 +16,9 @@ VantComponent({
             observer: 'setGutter'
         }
     },
+    data: {
+        viewStyle: '',
+    },
     mounted() {
         if (this.data.gutter) {
             this.setGutter();
@@ -24,10 +28,10 @@ VantComponent({
         setGutter() {
             const { gutter } = this.data;
             const margin = `-${Number(gutter) / 2}px`;
-            const style = gutter
+            const viewStyle = gutter
                 ? `margin-right: ${margin}; margin-left: ${margin};`
                 : '';
-            this.setData({ style });
+            this.setData({ viewStyle });
             this.getRelationNodes('../col/index').forEach(col => {
                 col.setGutter(this.data.gutter);
             });
diff --git a/dist/row/index.wxml b/dist/row/index.wxml
index 20c53661..ab8fcf58 100644
--- a/dist/row/index.wxml
+++ b/dist/row/index.wxml
@@ -1,3 +1,3 @@
-<view class="custom-class van-row" style="{{ style }}">
+<view class="custom-class van-row" style="{{ viewStyle }}">
   <slot />
 </view>
diff --git a/dist/sidebar-item/index.js b/dist/sidebar-item/index.js
index ecdaa08b..a3e02ca2 100644
--- a/dist/sidebar-item/index.js
+++ b/dist/sidebar-item/index.js
@@ -7,9 +7,7 @@ VantComponent({
     relation: {
         type: 'ancestor',
         name: 'sidebar',
-        linked(target) {
-            this.parent = target;
-        }
+        current: 'sidebar-item',
     },
     props: {
         dot: Boolean,
diff --git a/dist/sidebar/index.js b/dist/sidebar/index.js
index 326faf5c..008fe99c 100644
--- a/dist/sidebar/index.js
+++ b/dist/sidebar/index.js
@@ -3,12 +3,11 @@ VantComponent({
     relation: {
         name: 'sidebar-item',
         type: 'descendant',
-        linked(target) {
-            this.children.push(target);
+        current: 'sidebar',
+        linked() {
             this.setActive(this.data.activeKey);
         },
-        unlinked(target) {
-            this.children = this.children.filter((item) => item !== target);
+        unlinked() {
             this.setActive(this.data.activeKey);
         }
     },
@@ -20,7 +19,6 @@ VantComponent({
         }
     },
     beforeCreate() {
-        this.children = [];
         this.currentActive = -1;
     },
     methods: {
diff --git a/dist/skeleton/index.js b/dist/skeleton/index.js
index ea5bb966..0239a792 100644
--- a/dist/skeleton/index.js
+++ b/dist/skeleton/index.js
@@ -4,7 +4,10 @@ VantComponent({
     props: {
         row: {
             type: Number,
-            value: 0
+            value: 0,
+            observer(value) {
+                this.setData({ rowArray: Array.from({ length: value }) });
+            },
         },
         title: Boolean,
         avatar: Boolean,
@@ -37,6 +40,7 @@ VantComponent({
         }
     },
     data: {
-        isArray: false
+        isArray: false,
+        rowArray: [],
     }
 });
diff --git a/dist/skeleton/index.wxml b/dist/skeleton/index.wxml
index 6f07a219..058e2efd 100644
--- a/dist/skeleton/index.wxml
+++ b/dist/skeleton/index.wxml
@@ -16,7 +16,7 @@
       style="{{ 'width:' + titleWidth }}"
     />
     <view
-      wx:for="{{ row }}"
+      wx:for="{{ rowArray }}"
       wx:key="index"
       wx:for-index="index"
       class="row-class {{ utils.bem('skeleton__row') }}"
diff --git a/dist/submit-bar/index.js b/dist/submit-bar/index.js
index 23a34dae..a457abaf 100644
--- a/dist/submit-bar/index.js
+++ b/dist/submit-bar/index.js
@@ -42,9 +42,11 @@ VantComponent({
     methods: {
         updatePrice() {
             const { price, decimalLength } = this.data;
+            const priceStrArr = typeof price === 'number' && (price / 100).toFixed(decimalLength).split('.');
             this.setData({
                 hasPrice: typeof price === 'number',
-                priceStr: (price / 100).toFixed(decimalLength)
+                integerStr: priceStrArr && priceStrArr[0],
+                decimalStr: decimalLength && priceStrArr ? `.${priceStrArr[1]}` : ''
             });
         },
         updateTip() {
diff --git a/dist/submit-bar/index.wxml b/dist/submit-bar/index.wxml
index 4cdbd18d..7a623f70 100644
--- a/dist/submit-bar/index.wxml
+++ b/dist/submit-bar/index.wxml
@@ -22,18 +22,18 @@
       <text>{{ label || '合计：' }}</text>
       <text class="van-submit-bar__price price-class">
         <text class="van-submit-bar__currency">{{ currency }} </text>
-        <text>{{ priceStr }}</text>
+        <text class="van-submit-bar__price-integer">{{ integerStr }}</text><text>{{decimalStr}}</text>
       </text>
       <text class="van-submit-bar__suffix-label">{{ suffixLabel }}</text>
     </view>
     <van-button
-      square
-      size="large"
+      round
       type="{{ buttonType }}"
       loading="{{ loading }}"
       disabled="{{ disabled }}"
       class="van-submit-bar__button"
       custom-class="button-class"
+      custom-style="width: 100%;"
       bind:click="onSubmit"
     >
       {{ loading ? '' : buttonText }}
diff --git a/dist/submit-bar/index.wxss b/dist/submit-bar/index.wxss
index c21838e8..b958b9ca 100644
--- a/dist/submit-bar/index.wxss
+++ b/dist/submit-bar/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-submit-bar{position:fixed;bottom:0;left:0;width:100%;-webkit-user-select:none;user-select:none;z-index:100;z-index:var(--submit-bar-z-index,100);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__tip{padding:10px;padding:var(--submit-bar-tip-padding,10px);color:#f56723;color:var(--submit-bar-tip-color,#f56723);font-size:12px;font-size:var(--submit-bar-tip-font-size,12px);line-height:1.5;line-height:var(--submit-bar-tip-line-height,1.5);background-color:#fff7cc;background-color:var(--submit-bar-tip-background-color,#fff7cc)}.van-submit-bar__tip:empty{display:none}.van-submit-bar__tip-icon{width:12px;height:12px;margin-right:4px;vertical-align:middle;font-size:12px;font-size:var(--submit-bar-tip-icon-size,12px);min-width:18px;min-width:calc(var(--submit-bar-tip-icon-size, 12px)*1.5)}.van-submit-bar__tip-text{display:inline;vertical-align:middle}.van-submit-bar__bar{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:flex-end;justify-content:flex-end;height:50px;height:var(--submit-bar-height,50px);font-size:14px;font-size:var(--submit-bar-text-font-size,14px);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__bar--safe{padding-bottom:env(safe-area-inset-bottom)}.van-submit-bar__text{-webkit-flex:1;flex:1;text-align:right;color:#323233;color:var(--submit-bar-text-color,#323233);padding-right:12px;padding-right:var(--padding-sm,12px);font-weight:500;font-weight:var(--font-weight-bold,500)}.van-submit-bar__price{color:#ee0a24;color:var(--submit-bar-price-color,#ee0a24);font-size:18px;font-size:var(--submit-bar-price-font-size,18px)}.van-submit-bar__currency{font-size:14px;font-size:var(--submit-bar-currency-font-size,14px)}.van-submit-bar__suffix-label{margin-left:5px}.van-submit-bar__button{width:110px;width:var(--submit-bar-button-width,110px)}
\ No newline at end of file
+@import '../common/index.wxss';.van-submit-bar{position:fixed;bottom:0;left:0;width:100%;-webkit-user-select:none;user-select:none;z-index:100;z-index:var(--submit-bar-z-index,100);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__tip{padding:10px;padding:var(--submit-bar-tip-padding,10px);color:#f56723;color:var(--submit-bar-tip-color,#f56723);font-size:12px;font-size:var(--submit-bar-tip-font-size,12px);line-height:1.5;line-height:var(--submit-bar-tip-line-height,1.5);background-color:#fff7cc;background-color:var(--submit-bar-tip-background-color,#fff7cc)}.van-submit-bar__tip:empty{display:none}.van-submit-bar__tip-icon{width:12px;height:12px;margin-right:4px;vertical-align:middle;font-size:12px;font-size:var(--submit-bar-tip-icon-size,12px);min-width:18px;min-width:calc(var(--submit-bar-tip-icon-size, 12px)*1.5)}.van-submit-bar__tip-text{display:inline;vertical-align:middle}.van-submit-bar__bar{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:flex-end;justify-content:flex-end;padding:0 16px;padding:var(--submit-bar-padding,0 16px);height:50px;height:var(--submit-bar-height,50px);font-size:14px;font-size:var(--submit-bar-text-font-size,14px);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__bar--safe{padding-bottom:env(safe-area-inset-bottom)}.van-submit-bar__text{-webkit-flex:1;flex:1;text-align:right;color:#323233;color:var(--submit-bar-text-color,#323233);padding-right:12px;padding-right:var(--padding-sm,12px)}.van-submit-bar__price,.van-submit-bar__text{font-weight:500;font-weight:var(--font-weight-bold,500)}.van-submit-bar__price{color:#ee0a24;color:var(--submit-bar-price-color,#ee0a24);font-size:12px;font-size:var(--submit-bar-price-font-size,12px)}.van-submit-bar__price-integer{font-size:20px;font-family:Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif}.van-submit-bar__currency{font-size:12px;font-size:var(--submit-bar-currency-font-size,12px)}.van-submit-bar__suffix-label{margin-left:5px}.van-submit-bar__button{width:110px;width:var(--submit-bar-button-width,110px);font-weight:500;font-weight:var(--font-weight-bold,500);--button-default-height:40px!important;--button-default-height:var(--submit-bar-button-height,40px)!important;--button-line-height:40px!important;--button-line-height:var(--submit-bar-button-height,40px)!important}
\ No newline at end of file
diff --git a/dist/tab/index.js b/dist/tab/index.js
index d0dc7179..79a3c238 100644
--- a/dist/tab/index.js
+++ b/dist/tab/index.js
@@ -3,12 +3,7 @@ VantComponent({
     relation: {
         name: 'tabs',
         type: 'ancestor',
-        linked(target) {
-            this.parent = target;
-        },
-        unlinked() {
-            this.parent = null;
-        }
+        current: 'tab',
     },
     props: {
         dot: {
diff --git a/dist/tabbar-item/index.js b/dist/tabbar-item/index.js
index bd5fccfb..3555a26c 100644
--- a/dist/tabbar-item/index.js
+++ b/dist/tabbar-item/index.js
@@ -8,7 +8,8 @@ VantComponent({
     },
     relation: {
         name: 'tabbar',
-        type: 'ancestor'
+        type: 'ancestor',
+        current: 'tabbar-item',
     },
     data: {
         active: false
diff --git a/dist/tabbar/index.js b/dist/tabbar/index.js
index b2276444..620936f5 100644
--- a/dist/tabbar/index.js
+++ b/dist/tabbar/index.js
@@ -3,13 +3,12 @@ VantComponent({
     relation: {
         name: 'tabbar-item',
         type: 'descendant',
+        current: 'tabbar',
         linked(target) {
-            this.children.push(target);
             target.parent = this;
             target.updateFromParent();
         },
-        unlinked(target) {
-            this.children = this.children.filter((item) => item !== target);
+        unlinked() {
             this.updateChildren();
         }
     },
@@ -43,9 +42,6 @@ VantComponent({
             value: true
         }
     },
-    beforeCreate() {
-        this.children = [];
-    },
     methods: {
         updateChildren() {
             const { children } = this;
diff --git a/dist/tabs/index.js b/dist/tabs/index.js
index c927edd6..3cfb7bcd 100644
--- a/dist/tabs/index.js
+++ b/dist/tabs/index.js
@@ -7,14 +7,13 @@ VantComponent({
     relation: {
         name: 'tab',
         type: 'descendant',
+        current: 'tabs',
         linked(target) {
-            target.index = this.children.length;
-            this.children.push(target);
+            target.index = this.children.length - 1;
             this.updateTabs();
         },
-        unlinked(target) {
+        unlinked() {
             this.children = this.children
-                .filter((child) => child !== target)
                 .map((child, index) => {
                 child.index = index;
                 return child;
@@ -103,15 +102,13 @@ VantComponent({
         currentIndex: null,
         container: null
     },
-    beforeCreate() {
-        this.children = [];
-    },
     mounted() {
         this.setData({
             container: () => this.createSelectorQuery().select('.van-tabs')
+        }, () => {
+            this.setLine(true);
+            this.scrollIntoView();
         });
-        this.setLine(true);
-        this.scrollIntoView();
     },
     methods: {
         updateTabs() {
@@ -122,23 +119,23 @@ VantComponent({
             });
             this.setCurrentIndexByName(this.getCurrentName() || data.active);
         },
-        trigger(eventName) {
+        trigger(eventName, child) {
             const { currentIndex } = this.data;
-            const child = this.children[currentIndex];
-            if (!isDef(child)) {
+            const currentChild = child || this.children[currentIndex];
+            if (!isDef(currentChild)) {
                 return;
             }
             this.$emit(eventName, {
-                index: currentIndex,
-                name: child.getComputedName(),
-                title: child.data.title
+                index: currentChild.index,
+                name: currentChild.getComputedName(),
+                title: currentChild.data.title
             });
         },
         onTap(event) {
             const { index } = event.currentTarget.dataset;
             const child = this.children[index];
             if (child.data.disabled) {
-                this.trigger('disabled');
+                this.trigger('disabled', child);
             }
             else {
                 this.setCurrentIndex(index);
diff --git a/lib/button/index.js b/lib/button/index.js
index 2d453c00..eca1f66a 100644
--- a/lib/button/index.js
+++ b/lib/button/index.js
@@ -7,7 +7,7 @@ component_1.VantComponent({
     mixins: [button_1.button, open_type_1.openType],
     classes: ['hover-class', 'loading-class'],
     data: {
-        style: ''
+        baseStyle: ''
     },
     props: {
         icon: String,
@@ -54,8 +54,8 @@ component_1.VantComponent({
                         style += "border-color: " + color + ";";
                     }
                 }
-                if (style !== this.data.style) {
-                    this.setData({ style: style });
+                if (style !== this.data.baseStyle) {
+                    this.setData({ baseStyle: style });
                 }
             }
         }
diff --git a/lib/button/index.wxml b/lib/button/index.wxml
index 77b49429..3239354f 100644
--- a/lib/button/index.wxml
+++ b/lib/button/index.wxml
@@ -5,7 +5,7 @@
   class="custom-class {{ utils.bem('button', [type, size, { block, round, plain, square, loading, disabled, hairline, unclickable: disabled || loading }]) }} {{ hairline ? 'van-hairline--surround' : '' }}"
   hover-class="van-button--active hover-class"
   lang="{{ lang }}"
-  style="{{ style }} {{ customStyle }}"
+  style="{{ baseStyle }} {{ customStyle }}"
   open-type="{{ openType }}"
   business-id="{{ businessId }}"
   session-from="{{ sessionFrom }}"
@@ -28,7 +28,7 @@
       custom-class="loading-class"
       size="{{ loadingSize }}"
       type="{{ loadingType }}"
-      color="{{ type === 'default' ? '#c9c9c9' : 'white' }}"
+      color="{{ loadingColor(type,color,plain) }}"
     />
     <view
       wx:if="{{ loadingText }}"
@@ -50,3 +50,19 @@
     </view>
   </block>
 </button>
+
+
+<wxs module="loadingColor">
+function get(type, color,plain) {
+  if(plain) {
+    return color ? color: '#c9c9c9';
+  }
+
+  if(type === 'default') {
+    return '#c9c9c9';
+  }
+  return 'white';
+}
+
+module.exports = get;
+</wxs>
diff --git a/lib/button/index.wxss b/lib/button/index.wxss
index 0d302cb0..5a591fbd 100644
--- a/lib/button/index.wxss
+++ b/lib/button/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-button{position:relative;display:-webkit-inline-flex;display:inline-flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;box-sizing:border-box;padding:0;line-height:20px;text-align:center;vertical-align:middle;-webkit-appearance:none;-webkit-text-size-adjust:100%;height:44px;height:var(--button-default-height,44px);font-size:16px;font-size:var(--button-default-font-size,16px);transition:opacity .2s;transition:opacity var(--animation-duration-fast,.2s);border-radius:2px;border-radius:var(--button-border-radius,2px)}.van-button:before{position:absolute;top:50%;left:50%;width:100%;height:100%;border:inherit;border-radius:inherit;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;content:" ";background-color:#000;background-color:var(--black,#000);border-color:#000;border-color:var(--black,#000)}.van-button:after{border-width:0}.van-button--active:before{opacity:.15}.van-button--unclickable:after{display:none}.van-button--default{color:#323233;color:var(--button-default-color,#323233);background-color:#fff;background-color:var(--button-default-background-color,#fff);border:1px solid #ebedf0;border:1px solid var(--button-default-border-color,#ebedf0)}.van-button--primary{color:#fff;color:var(--button-primary-color,#fff);background-color:#07c160;background-color:var(--button-primary-background-color,#07c160);border:1px solid #07c160;border:1px solid var(--button-primary-border-color,#07c160)}.van-button--info{color:#fff;color:var(--button-info-color,#fff);background-color:#1989fa;background-color:var(--button-info-background-color,#1989fa);border:1px solid #1989fa;border:1px solid var(--button-info-border-color,#1989fa)}.van-button--danger{color:#fff;color:var(--button-danger-color,#fff);background-color:#ee0a24;background-color:var(--button-danger-background-color,#ee0a24);border:1px solid #ee0a24;border:1px solid var(--button-danger-border-color,#ee0a24)}.van-button--warning{color:#fff;color:var(--button-warning-color,#fff);background-color:#ff976a;background-color:var(--button-warning-background-color,#ff976a);border:1px solid #ff976a;border:1px solid var(--button-warning-border-color,#ff976a)}.van-button--plain{background-color:#fff;background-color:var(--button-plain-background-color,#fff)}.van-button--plain.van-button--primary{color:#07c160;color:var(--button-primary-background-color,#07c160)}.van-button--plain.van-button--info{color:#1989fa;color:var(--button-info-background-color,#1989fa)}.van-button--plain.van-button--danger{color:#ee0a24;color:var(--button-danger-background-color,#ee0a24)}.van-button--plain.van-button--warning{color:#ff976a;color:var(--button-warning-background-color,#ff976a)}.van-button--large{width:100%;height:50px;height:var(--button-large-height,50px)}.van-button--normal{padding:0 15px;font-size:14px;font-size:var(--button-normal-font-size,14px)}.van-button--small{min-width:60px;min-width:var(--button-small-min-width,60px);height:30px;height:var(--button-small-height,30px);padding:0 8px;padding:0 var(--padding-xs,8px);font-size:12px;font-size:var(--button-small-font-size,12px)}.van-button--mini{display:inline-block;min-width:50px;min-width:var(--button-mini-min-width,50px);height:22px;height:var(--button-mini-height,22px);font-size:10px;font-size:var(--button-mini-font-size,10px)}.van-button--mini+.van-button--mini{margin-left:5px}.van-button--block{display:-webkit-flex;display:flex;width:100%}.van-button--round{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--square{border-radius:0}.van-button--disabled{opacity:.5;opacity:var(--button-disabled-opacity,.5)}.van-button__text{display:inline}.van-button__icon+.van-button__text:not(:empty),.van-button__loading-text{margin-left:4px}.van-button__icon{min-width:1em;line-height:inherit!important;vertical-align:top}.van-button--hairline{padding-top:1px;border-width:0}.van-button--hairline:after{border-color:inherit;border-width:1px;border-radius:4px;border-radius:calc(var(--button-border-radius, 2px)*2)}.van-button--hairline.van-button--round:after{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--hairline.van-button--square:after{border-radius:0}
\ No newline at end of file
+@import '../common/index.wxss';.van-button{position:relative;display:-webkit-inline-flex;display:inline-flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;box-sizing:border-box;padding:0;text-align:center;vertical-align:middle;-webkit-appearance:none;-webkit-text-size-adjust:100%;height:44px;height:var(--button-default-height,44px);line-height:20px;line-height:var(--button-line-height,20px);font-size:16px;font-size:var(--button-default-font-size,16px);transition:opacity .2s;transition:opacity var(--animation-duration-fast,.2s);border-radius:2px;border-radius:var(--button-border-radius,2px)}.van-button:before{position:absolute;top:50%;left:50%;width:100%;height:100%;border:inherit;border-radius:inherit;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;content:" ";background-color:#000;background-color:var(--black,#000);border-color:#000;border-color:var(--black,#000)}.van-button:after{border-width:0}.van-button--active:before{opacity:.15}.van-button--unclickable:after{display:none}.van-button--default{color:#323233;color:var(--button-default-color,#323233);background:#fff;background:var(--button-default-background-color,#fff);border:1px solid #ebedf0;border:var(--button-border-width,1px) solid var(--button-default-border-color,#ebedf0)}.van-button--primary{color:#fff;color:var(--button-primary-color,#fff);background:#07c160;background:var(--button-primary-background-color,#07c160);border:1px solid #07c160;border:var(--button-border-width,1px) solid var(--button-primary-border-color,#07c160)}.van-button--info{color:#fff;color:var(--button-info-color,#fff);background:#1989fa;background:var(--button-info-background-color,#1989fa);border:1px solid #1989fa;border:var(--button-border-width,1px) solid var(--button-info-border-color,#1989fa)}.van-button--danger{color:#fff;color:var(--button-danger-color,#fff);background:#ee0a24;background:var(--button-danger-background-color,#ee0a24);border:1px solid #ee0a24;border:var(--button-border-width,1px) solid var(--button-danger-border-color,#ee0a24)}.van-button--warning{color:#fff;color:var(--button-warning-color,#fff);background:#ff976a;background:var(--button-warning-background-color,#ff976a);border:1px solid #ff976a;border:var(--button-border-width,1px) solid var(--button-warning-border-color,#ff976a)}.van-button--plain{background:#fff;background:var(--button-plain-background-color,#fff)}.van-button--plain.van-button--primary{color:#07c160;color:var(--button-primary-background-color,#07c160)}.van-button--plain.van-button--info{color:#1989fa;color:var(--button-info-background-color,#1989fa)}.van-button--plain.van-button--danger{color:#ee0a24;color:var(--button-danger-background-color,#ee0a24)}.van-button--plain.van-button--warning{color:#ff976a;color:var(--button-warning-background-color,#ff976a)}.van-button--large{width:100%;height:50px;height:var(--button-large-height,50px)}.van-button--normal{padding:0 15px;font-size:14px;font-size:var(--button-normal-font-size,14px)}.van-button--small{min-width:60px;min-width:var(--button-small-min-width,60px);height:30px;height:var(--button-small-height,30px);padding:0 8px;padding:0 var(--padding-xs,8px);font-size:12px;font-size:var(--button-small-font-size,12px)}.van-button--mini{display:inline-block;min-width:50px;min-width:var(--button-mini-min-width,50px);height:22px;height:var(--button-mini-height,22px);font-size:10px;font-size:var(--button-mini-font-size,10px)}.van-button--mini+.van-button--mini{margin-left:5px}.van-button--block{display:-webkit-flex;display:flex;width:100%}.van-button--round{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--square{border-radius:0}.van-button--disabled{opacity:.5;opacity:var(--button-disabled-opacity,.5)}.van-button__text{display:inline}.van-button__icon+.van-button__text:not(:empty),.van-button__loading-text{margin-left:4px}.van-button__icon{min-width:1em;line-height:inherit!important;vertical-align:top}.van-button--hairline{padding-top:1px;border-width:0}.van-button--hairline:after{border-color:inherit;border-width:1px;border-radius:4px;border-radius:calc(var(--button-border-radius, 2px)*2)}.van-button--hairline.van-button--round:after{border-radius:999px;border-radius:var(--button-round-border-radius,999px)}.van-button--hairline.van-button--square:after{border-radius:0}
\ No newline at end of file
diff --git a/lib/card/index.js b/lib/card/index.js
index 47a7d832..0c9660ec 100644
--- a/lib/card/index.js
+++ b/lib/card/index.js
@@ -18,7 +18,10 @@ component_1.VantComponent({
         desc: String,
         thumb: String,
         title: String,
-        price: String,
+        price: {
+            type: String,
+            observer: 'updatePrice'
+        },
         centered: Boolean,
         lazyLoad: Boolean,
         thumbLink: String,
@@ -33,6 +36,14 @@ component_1.VantComponent({
         }
     },
     methods: {
+        updatePrice: function () {
+            var price = this.data.price;
+            var priceArr = price.toString().split('.');
+            this.setData({
+                integerStr: priceArr[0],
+                decimalStr: priceArr[1] ? "." + priceArr[1] : '',
+            });
+        },
         onClickThumb: function () {
             this.jumpLink('thumbLink');
         }
diff --git a/lib/card/index.wxml b/lib/card/index.wxml
index a17b1d62..548c810d 100644
--- a/lib/card/index.wxml
+++ b/lib/card/index.wxml
@@ -21,17 +21,20 @@
       </van-tag>
     </view>
 
-    <view class="van-card__content">
-      <view wx:if="{{ title }}" class="van-card__title title-class">{{ title }}</view>
-      <slot wx:else name="title" />
+    <view class="van-card__content {{ utils.bem('card__content', { center: centered }) }}">
+      <view>
+        <view wx:if="{{ title }}" class="van-card__title title-class">{{ title }}</view>
+        <slot wx:else name="title" />
 
-      <view wx:if="{{ desc }}" class="van-card__desc desc-class">{{ desc }}</view>
-      <slot wx:else name="desc" />
+        <view wx:if="{{ desc }}" class="van-card__desc desc-class">{{ desc }}</view>
+        <slot wx:else name="desc" />
 
-      <slot name="tags" />
+        <slot name="tags" />
+      </view>
 
       <view class="van-card__bottom">
-        <view wx:if="{{ price || price === 0 }}" class="van-card__price price-class">{{ currency }} {{ price }}</view>
+        <slot name="price-top" />
+        <view wx:if="{{ price || price === 0 }}" class="van-card__price price-class">{{ currency }}<text class="van-card__price-integer">{{ integerStr }}</text><text class="van-card__price-decimal">{{ decimalStr }}</text></view>
         <view wx:if="{{ originPrice || originPrice === 0 }}" class="van-card__origin-price origin-price-class">{{ currency }} {{ originPrice }}</view>
         <view wx:if="{{ num }}" class="van-card__num num-class">x {{ num }}</view>
         <slot name="bottom" />
diff --git a/lib/card/index.wxss b/lib/card/index.wxss
index 8e86e452..0a90c3c3 100644
--- a/lib/card/index.wxss
+++ b/lib/card/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-card{position:relative;box-sizing:border-box;padding:8px 16px;padding:var(--card-padding,8px 16px);font-size:12px;font-size:var(--card-font-size,12px);color:#323233;color:var(--card-text-color,#323233);background-color:#fafafa;background-color:var(--card-background-color,#fafafa)}.van-card__header{display:-webkit-flex;display:flex}.van-card__header--center{-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center}.van-card__thumb{position:relative;-webkit-flex:none;flex:none;width:90px;width:var(--card-thumb-size,90px);height:90px;height:var(--card-thumb-size,90px);margin-right:8px;margin-right:var(--padding-xs,8px)}.van-card__thumb:empty{display:none}.van-card__img{width:100%;height:100%}.van-card__content{position:relative;-webkit-flex:1;flex:1;min-width:0}.van-card__desc,.van-card__title{word-wrap:break-word}.van-card__title{font-weight:700;line-height:16px;line-height:var(--card-title-line-height,16px)}.van-card__desc{line-height:20px;line-height:var(--card-desc-line-height,20px);color:#646566;color:var(--card-desc-color,#646566)}.van-card__bottom{line-height:20px}.van-card__price{display:inline-block;font-weight:700;color:#ee0a24;color:var(--card-price-color,#ee0a24)}.van-card__origin-price{display:inline-block;margin-left:5px;text-decoration:line-through;font-size:10px;font-size:var(--card-origin-price-font-size,10px);color:#646566;color:var(--card-origin-price-color,#646566)}.van-card__num{float:right}.van-card__tag{position:absolute;top:2px;left:0}.van-card__footer{-webkit-flex:none;flex:none;width:100%;text-align:right}
\ No newline at end of file
+@import '../common/index.wxss';.van-card{position:relative;box-sizing:border-box;padding:8px 16px;padding:var(--card-padding,8px 16px);font-size:12px;font-size:var(--card-font-size,12px);color:#323233;color:var(--card-text-color,#323233);background-color:#fafafa;background-color:var(--card-background-color,#fafafa)}.van-card__header{display:-webkit-flex;display:flex}.van-card__header--center{-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center}.van-card__thumb{position:relative;-webkit-flex:none;flex:none;width:88px;width:var(--card-thumb-size,88px);height:88px;height:var(--card-thumb-size,88px);margin-right:8px;margin-right:var(--padding-xs,8px)}.van-card__thumb:empty{display:none}.van-card__img{width:100%;height:100%;border-radius:8px;border-radius:var(--border-radius-lg,8px)}.van-card__content{position:relative;display:-webkit-flex;display:flex;-webkit-flex:1;flex:1;-webkit-flex-direction:column;flex-direction:column;-webkit-justify-content:space-between;justify-content:space-between;min-width:0;min-height:88px;min-height:var(--card-thumb-size,88px)}.van-card__content--center{-webkit-justify-content:center;justify-content:center}.van-card__desc,.van-card__title{word-wrap:break-word}.van-card__title{font-weight:700;line-height:16px;line-height:var(--card-title-line-height,16px)}.van-card__desc{line-height:20px;line-height:var(--card-desc-line-height,20px);color:#646566;color:var(--card-desc-color,#646566)}.van-card__bottom{line-height:20px}.van-card__price{display:inline-block;font-weight:700;color:#ee0a24;color:var(--card-price-color,#ee0a24);font-size:12px;font-size:var(--card-price-font-size,12px)}.van-card__price-integer{font-size:16px;font-size:var(--card-price-integer-font-size,16px)}.van-card__price-decimal,.van-card__price-integer{font-family:Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif;font-family:var(--card-price-font-family,Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif)}.van-card__origin-price{display:inline-block;margin-left:5px;text-decoration:line-through;font-size:10px;font-size:var(--card-origin-price-font-size,10px);color:#646566;color:var(--card-origin-price-color,#646566)}.van-card__num{float:right}.van-card__tag{position:absolute;top:2px;left:0}.van-card__footer{-webkit-flex:none;flex:none;width:100%;text-align:right}
\ No newline at end of file
diff --git a/lib/checkbox-group/index.js b/lib/checkbox-group/index.js
index 4d5cfaee..0e8b2c89 100644
--- a/lib/checkbox-group/index.js
+++ b/lib/checkbox-group/index.js
@@ -6,14 +6,10 @@ component_1.VantComponent({
     relation: {
         name: 'checkbox',
         type: 'descendant',
+        current: 'checkbox-group',
         linked: function (target) {
-            this.children = this.children || [];
-            this.children.push(target);
             this.updateChild(target);
         },
-        unlinked: function (target) {
-            this.children = this.children.filter(function (child) { return child !== target; });
-        }
     },
     props: {
         max: Number,
@@ -37,7 +33,7 @@ component_1.VantComponent({
             var _a = this.data, value = _a.value, disabled = _a.disabled;
             child.setData({
                 value: value.indexOf(child.data.name) !== -1,
-                disabled: disabled || child.data.disabled
+                parentDisabled: disabled
             });
         }
     }
diff --git a/lib/checkbox/index.js b/lib/checkbox/index.js
index 86c60ddd..676b67da 100644
--- a/lib/checkbox/index.js
+++ b/lib/checkbox/index.js
@@ -10,12 +10,7 @@ component_1.VantComponent({
     relation: {
         name: 'checkbox-group',
         type: 'ancestor',
-        linked: function (target) {
-            this.parent = target;
-        },
-        unlinked: function () {
-            this.parent = null;
-        }
+        current: 'checkbox',
     },
     classes: ['icon-class', 'label-class'],
     props: {
@@ -34,6 +29,9 @@ component_1.VantComponent({
             value: 20
         }
     },
+    data: {
+        parentDisabled: false
+    },
     methods: {
         emitChange: function (value) {
             if (this.parent) {
@@ -44,14 +42,14 @@ component_1.VantComponent({
             }
         },
         toggle: function () {
-            var _a = this.data, disabled = _a.disabled, value = _a.value;
-            if (!disabled) {
+            var _a = this.data, parentDisabled = _a.parentDisabled, disabled = _a.disabled, value = _a.value;
+            if (!disabled && !parentDisabled) {
                 this.emitChange(!value);
             }
         },
         onClickLabel: function () {
-            var _a = this.data, labelDisabled = _a.labelDisabled, disabled = _a.disabled, value = _a.value;
-            if (!disabled && !labelDisabled) {
+            var _a = this.data, labelDisabled = _a.labelDisabled, parentDisabled = _a.parentDisabled, disabled = _a.disabled, value = _a.value;
+            if (!disabled && !labelDisabled && !parentDisabled) {
                 this.emitChange(!value);
             }
         },
diff --git a/lib/checkbox/index.wxml b/lib/checkbox/index.wxml
index 19a89260..94789d81 100644
--- a/lib/checkbox/index.wxml
+++ b/lib/checkbox/index.wxml
@@ -1,4 +1,5 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
+<wxs src="./index.wxs" module="computed" />
 
 <view class="van-checkbox custom-class">
   <view class="van-checkbox__icon-wrap" bindtap="toggle">
@@ -7,13 +8,13 @@
       wx:else
       name="success"
       size="0.8em"
-      class="{{ utils.bem('checkbox__icon', [shape, { disabled, checked: value }]) }}"
-      style="font-size: {{ utils.addUnit(iconSize) }};{{ checkedColor && value && !disabled ? 'border-color:' + checkedColor + '; background-color:' + checkedColor : '' }}"
+      class="{{ utils.bem('checkbox__icon', [shape, { disabled: disabled || parentDisabled, checked: value }]) }}"
+      style="{{ computed.iconStyle(checkedColor, value, disabled, parentDisabled, iconSize) }}"
       custom-class="icon-class"
       custom-style="line-height: 1.25em;"
     />
   </view>
-  <view class="label-class {{ utils.bem('checkbox__label', [labelPosition, { disabled }]) }}" bindtap="onClickLabel">
+  <view class="label-class {{ utils.bem('checkbox__label', [labelPosition, { disabled: disabled || parentDisabled }]) }}" bindtap="onClickLabel">
     <slot />
   </view>
 </view>
diff --git a/lib/checkbox/index.wxs b/lib/checkbox/index.wxs
new file mode 100644
index 00000000..927eb55d
--- /dev/null
+++ b/lib/checkbox/index.wxs
@@ -0,0 +1,20 @@
+/* eslint-disable */
+var utils = require('../wxs/utils.wxs');
+
+function iconStyle(checkedColor, value, disabled, parentDisabled, iconSize) {
+  var styles = [['font-size', utils.addUnit(iconSize)]];
+  if (checkedColor && value && !disabled && !parentDisabled) {
+    styles.push(['border-color', checkedColor]);
+    styles.push(['background-color', checkedColor]);
+  }
+
+  return styles
+    .map(function(item) {
+      return item.join(':');
+    })
+    .join(';');
+}
+
+module.exports = {
+  iconStyle: iconStyle
+};
diff --git a/lib/col/index.js b/lib/col/index.js
index 2e7a66ac..307e5953 100644
--- a/lib/col/index.js
+++ b/lib/col/index.js
@@ -4,21 +4,22 @@ var component_1 = require("../common/component");
 component_1.VantComponent({
     relation: {
         name: 'row',
-        type: 'ancestor'
+        type: 'ancestor',
+        current: 'col',
     },
     props: {
         span: Number,
         offset: Number
     },
     data: {
-        style: ''
+        viewStyle: ''
     },
     methods: {
         setGutter: function (gutter) {
             var padding = gutter / 2 + "px";
-            var style = gutter ? "padding-left: " + padding + "; padding-right: " + padding + ";" : '';
-            if (style !== this.data.style) {
-                this.setData({ style: style });
+            var viewStyle = gutter ? "padding-left: " + padding + "; padding-right: " + padding + ";" : '';
+            if (viewStyle !== this.data.viewStyle) {
+                this.setData({ viewStyle: viewStyle });
             }
         }
     }
diff --git a/lib/col/index.wxml b/lib/col/index.wxml
index a759aac5..52544f09 100644
--- a/lib/col/index.wxml
+++ b/lib/col/index.wxml
@@ -2,7 +2,7 @@
 
 <view
   class="custom-class {{ utils.bem('col', [span]) }} {{ offset ? 'van-col--offset-' + offset : '' }}"
-  style="{{ style }}"
+  style="{{ viewStyle }}"
 >
   <slot />
 </view>
diff --git a/lib/collapse-item/index.js b/lib/collapse-item/index.js
index bf41e39e..61b21dfe 100644
--- a/lib/collapse-item/index.js
+++ b/lib/collapse-item/index.js
@@ -7,9 +7,7 @@ component_1.VantComponent({
     relation: {
         name: 'collapse',
         type: 'ancestor',
-        linked: function (parent) {
-            this.parent = parent;
-        }
+        current: 'collapse-item',
     },
     props: {
         name: null,
diff --git a/lib/collapse/index.js b/lib/collapse/index.js
index 62982573..28e2c5a0 100644
--- a/lib/collapse/index.js
+++ b/lib/collapse/index.js
@@ -5,12 +5,7 @@ component_1.VantComponent({
     relation: {
         name: 'collapse-item',
         type: 'descendant',
-        linked: function (child) {
-            this.children.push(child);
-        },
-        unlinked: function (child) {
-            this.children = this.children.filter(function (item) { return item !== child; });
-        }
+        current: 'collapse',
     },
     props: {
         value: {
@@ -26,9 +21,6 @@ component_1.VantComponent({
             value: true
         }
     },
-    beforeCreate: function () {
-        this.children = [];
-    },
     methods: {
         updateExpanded: function () {
             this.children.forEach(function (child) {
diff --git a/lib/common/component.js b/lib/common/component.js
index 6a133697..74270704 100644
--- a/lib/common/component.js
+++ b/lib/common/component.js
@@ -1,6 +1,25 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var basic_1 = require("../mixins/basic");
+var relationFunctions = {
+    ancestor: {
+        linked: function (parent) {
+            this.parent = parent;
+        },
+        unlinked: function () {
+            this.parent = null;
+        },
+    },
+    descendant: {
+        linked: function (child) {
+            this.children = this.children || [];
+            this.children.push(child);
+        },
+        unlinked: function (child) {
+            this.children = (this.children || []).filter(function (it) { return it !== child; });
+        },
+    },
+};
 function mapKeys(source, target, map) {
     Object.keys(map).forEach(function (key) {
         if (source[key]) {
@@ -8,8 +27,38 @@ function mapKeys(source, target, map) {
         }
     });
 }
-function VantComponent(vantOptions) {
+function makeRelation(options, vantOptions, relation) {
     var _a;
+    var type = relation.type, name = relation.name, linked = relation.linked, unlinked = relation.unlinked, linkChanged = relation.linkChanged;
+    var beforeCreate = vantOptions.beforeCreate, destroyed = vantOptions.destroyed;
+    if (type === 'descendant') {
+        options.created = function () {
+            beforeCreate && beforeCreate.bind(this)();
+            this.children = this.children || [];
+        };
+        options.detached = function () {
+            this.children = [];
+            destroyed && destroyed.bind(this)();
+        };
+    }
+    options.relations = Object.assign(options.relations || {}, (_a = {},
+        _a["../" + name + "/index"] = {
+            type: type,
+            linked: function (node) {
+                relationFunctions[type].linked.bind(this)(node);
+                linked && linked.bind(this)(node);
+            },
+            linkChanged: function (node) {
+                linkChanged && linkChanged.bind(this)(node);
+            },
+            unlinked: function (node) {
+                relationFunctions[type].unlinked.bind(this)(node);
+                unlinked && unlinked.bind(this)(node);
+            },
+        },
+        _a));
+}
+function VantComponent(vantOptions) {
     if (vantOptions === void 0) { vantOptions = {}; }
     var options = {};
     mapKeys(vantOptions, options, {
@@ -26,9 +75,7 @@ function VantComponent(vantOptions) {
     });
     var relation = vantOptions.relation;
     if (relation) {
-        options.relations = Object.assign(options.relations || {}, (_a = {},
-            _a["../" + relation.name + "/index"] = relation,
-            _a));
+        makeRelation(options, vantOptions, relation);
     }
     // add default externalClasses
     options.externalClasses = options.externalClasses || [];
diff --git a/lib/dropdown-item/index.js b/lib/dropdown-item/index.js
index 59decdd2..839f6d7d 100644
--- a/lib/dropdown-item/index.js
+++ b/lib/dropdown-item/index.js
@@ -6,13 +6,10 @@ component_1.VantComponent({
     relation: {
         name: 'dropdown-menu',
         type: 'ancestor',
-        linked: function (target) {
-            this.parent = target;
+        current: 'dropdown-item',
+        linked: function () {
             this.updateDataFromParent();
         },
-        unlinked: function () {
-            this.parent = null;
-        }
     },
     props: {
         value: {
@@ -69,6 +66,7 @@ component_1.VantComponent({
             var value = option.value;
             var shouldEmitChange = this.data.value !== value;
             this.setData({ showPopup: false, value: value });
+            this.$emit('close');
             setTimeout(function () {
                 _this.setData({ showWrapper: false });
             }, this.data.duration || 0);
diff --git a/lib/dropdown-menu/index.js b/lib/dropdown-menu/index.js
index 74f5c212..41271f30 100644
--- a/lib/dropdown-menu/index.js
+++ b/lib/dropdown-menu/index.js
@@ -8,12 +8,11 @@ component_1.VantComponent({
     relation: {
         name: 'dropdown-item',
         type: 'descendant',
-        linked: function (target) {
-            this.children.push(target);
+        current: 'dropdown-menu',
+        linked: function () {
             this.updateItemListData();
         },
-        unlinked: function (target) {
-            this.children = this.children.filter(function (child) { return child !== target; });
+        unlinked: function () {
             this.updateItemListData();
         }
     },
@@ -57,7 +56,6 @@ component_1.VantComponent({
     beforeCreate: function () {
         var windowHeight = wx.getSystemInfoSync().windowHeight;
         this.windowHeight = windowHeight;
-        this.children = [];
         ARRAY.push(this);
     },
     destroyed: function () {
diff --git a/lib/goods-action-button/index.js b/lib/goods-action-button/index.js
index 71a45fcc..37c8a552 100644
--- a/lib/goods-action-button/index.js
+++ b/lib/goods-action-button/index.js
@@ -9,9 +9,7 @@ component_1.VantComponent({
     relation: {
         type: 'ancestor',
         name: 'goods-action',
-        linked: function (parent) {
-            this.parent = parent;
-        }
+        current: 'goods-action-button',
     },
     props: {
         text: String,
@@ -36,13 +34,8 @@ component_1.VantComponent({
             var _a = this.parent.children, children = _a === void 0 ? [] : _a;
             var length = children.length;
             var index = children.indexOf(this);
-            var rightBorderLess = false;
-            if (length > 1) {
-                rightBorderLess = index !== length - 1;
-            }
             this.setData({
                 isFirst: index === 0,
-                rightBorderLess: rightBorderLess,
                 isLast: index === length - 1
             });
         }
diff --git a/lib/goods-action-button/index.wxml b/lib/goods-action-button/index.wxml
index 392b96d9..3912cedb 100644
--- a/lib/goods-action-button/index.wxml
+++ b/lib/goods-action-button/index.wxml
@@ -1,6 +1,5 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 <van-button
-  square
   id="{{ id }}"
   lang="{{ lang }}"
   type="{{ type }}"
@@ -9,7 +8,8 @@
   loading="{{ loading }}"
   disabled="{{ disabled }}"
   open-type="{{ openType }}"
-  custom-class="{{ utils.bem('goods-action-button', [type, { first: isFirst, last: isLast, plain : plain, ordinary: !plain }])}} {{ rightBorderLess ?'van-goods-action-button--no-right-border': ''}}"
+  class="{{ utils.bem('goods-action-button', [type, { first: isFirst, last: isLast, plain: plain }])}}"
+  custom-class="van-goods-action-button__inner"
   business-id="{{ businessId }}"
   session-from="{{ sessionFrom }}"
   app-parameter="{{ appParameter }}"
@@ -26,4 +26,5 @@
   bindlaunchapp="bindLaunchApp"
 >
   {{ text }}
+  <slot></slot>
 </van-button>
diff --git a/lib/goods-action-button/index.wxss b/lib/goods-action-button/index.wxss
index c37f9b07..6577316b 100644
--- a/lib/goods-action-button/index.wxss
+++ b/lib/goods-action-button/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';:host{-webkit-flex:1;flex:1}.van-goods-action-button{height:40px!important;height:var(--goods-action-button-height,40px)!important;font-weight:500!important;font-weight:var(--font-weight-bold,500)!important;line-height:40px!important;line-height:var(--goods-action-button-height,40px)!important}.van-goods-action-button--first{display:block!important;margin-left:5px;border-top-left-radius:20px!important;border-top-left-radius:var(--goods-action-button-border-radius,20px)!important;border-bottom-left-radius:20px!important;border-bottom-left-radius:var(--goods-action-button-border-radius,20px)!important}.van-goods-action-button--last{display:block!important;margin-right:5px;border-top-right-radius:20px!important;border-top-right-radius:var(--goods-action-button-border-radius,20px)!important;border-bottom-right-radius:20px!important;border-bottom-right-radius:var(--goods-action-button-border-radius,20px)!important}.van-goods-action-button--warning{background:linear-gradient(90deg,#ffd01e,#ff8917);background:var(--goods-action-button-warning-color,linear-gradient(90deg,#ffd01e,#ff8917))}.van-goods-action-button--danger{background:linear-gradient(90deg,#ff6034,#ee0a24);background:var(--goods-action-button-danger-color,linear-gradient(90deg,#ff6034,#ee0a24))}.van-goods-action-button--ordinary{border:none!important}.van-goods-action-button--plain{background:#fff;background:var(--goods-action-button-plain-color,#fff)}.van-goods-action-button--no-right-border{border-right-width:0!important}@media (max-width:321px){.van-goods-action-button{font-size:13px}}
\ No newline at end of file
+@import '../common/index.wxss';:host{-webkit-flex:1;flex:1}.van-goods-action-button{--button-warning-background-color:linear-gradient(90deg,#ffd01e,#ff8917);--button-warning-background-color:var(--goods-action-button-warning-color,linear-gradient(90deg,#ffd01e,#ff8917));--button-danger-background-color:linear-gradient(90deg,#ff6034,#ee0a24);--button-danger-background-color:var(--goods-action-button-danger-color,linear-gradient(90deg,#ff6034,#ee0a24));--button-default-height:40px;--button-default-height:var(--goods-action-button-height,40px);--button-line-height:40px;--button-line-height:var(--goods-action-button-height,40px);--button-plain-background-color:#fff;--button-plain-background-color:var(--goods-action-button-plain-color,#fff);display:block;--button-border-width:0}.van-goods-action-button--first{margin-left:5px;--button-border-radius:20px 0 0 20px;--button-border-radius:var(--goods-action-button-border-radius,20px) 0 0 var(--goods-action-button-border-radius,20px)}.van-goods-action-button--last{margin-right:5px;--button-border-radius:0 20px 20px 0;--button-border-radius:0 var(--goods-action-button-border-radius,20px) var(--goods-action-button-border-radius,20px) 0}.van-goods-action-button--plain{--button-border-width:1px}.van-goods-action-button__inner{width:100%;font-weight:500!important;font-weight:var(--font-weight-bold,500)!important}@media (max-width:321px){.van-goods-action-button{font-size:13px}}
\ No newline at end of file
diff --git a/lib/goods-action/index.js b/lib/goods-action/index.js
index 7a2dacb1..fdd39123 100644
--- a/lib/goods-action/index.js
+++ b/lib/goods-action/index.js
@@ -5,15 +5,7 @@ component_1.VantComponent({
     relation: {
         type: 'descendant',
         name: 'goods-action-button',
-        linked: function (child) {
-            this.children.push(child);
-        },
-        unlinked: function (child) {
-            this.children = this.children.filter(function (item) { return item !== child; });
-        }
-    },
-    beforeCreate: function () {
-        this.children = [];
+        current: 'goods-action',
     },
     props: {
         safeAreaInsetBottom: {
diff --git a/lib/grid-item/index.js b/lib/grid-item/index.js
index a1e30775..34e68658 100644
--- a/lib/grid-item/index.js
+++ b/lib/grid-item/index.js
@@ -7,9 +7,7 @@ component_1.VantComponent({
     relation: {
         name: 'grid',
         type: 'ancestor',
-        linked: function (parent) {
-            this.parent = parent;
-        }
+        current: 'grid-item',
     },
     mixins: [link_1.link],
     props: {
@@ -19,6 +17,9 @@ component_1.VantComponent({
         text: String,
         useSlot: Boolean
     },
+    data: {
+        viewStyle: '',
+    },
     mounted: function () {
         this.updateStyle();
     },
@@ -49,7 +50,7 @@ component_1.VantComponent({
                 contentStyle = "\n          right: " + gutterValue + ";\n          bottom: " + gutterValue + ";\n          height: auto;\n        ";
             }
             this.setData({
-                style: styleWrapper.join('; '),
+                viewStyle: styleWrapper.join('; '),
                 contentStyle: contentStyle,
                 center: center,
                 border: border,
diff --git a/lib/grid-item/index.wxml b/lib/grid-item/index.wxml
index 2fb189b8..23b61c19 100644
--- a/lib/grid-item/index.wxml
+++ b/lib/grid-item/index.wxml
@@ -1,6 +1,6 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 
-<view class="{{ utils.bem('grid-item', { square }) }}" style="{{ style }}" bindtap="onClick">
+<view class="{{ utils.bem('grid-item', { square }) }}" style="{{ viewStyle }}" bindtap="onClick">
   <view
     class="{{ utils.bem('grid-item__content', { center, square, clickable, surround: border && gutter }) }} {{ border ? 'van-hairline--surround' : '' }}"
     style="{{ contentStyle }}"
diff --git a/lib/grid/index.js b/lib/grid/index.js
index 733a6a3b..5da26001 100644
--- a/lib/grid/index.js
+++ b/lib/grid/index.js
@@ -6,12 +6,7 @@ component_1.VantComponent({
     relation: {
         name: 'grid-item',
         type: 'descendant',
-        linked: function (child) {
-            this.children.push(child);
-        },
-        unlinked: function (child) {
-            this.children = this.children.filter(function (item) { return item !== child; });
-        }
+        current: 'grid',
     },
     props: {
         square: {
@@ -43,14 +38,14 @@ component_1.VantComponent({
             observer: 'updateChildren'
         }
     },
-    beforeCreate: function () {
-        this.children = [];
+    data: {
+        viewStyle: '',
     },
     created: function () {
         var gutter = this.data.gutter;
         if (gutter) {
             this.setData({
-                style: "padding-left: " + utils_1.addUnit(gutter)
+                viewStyle: "padding-left: " + utils_1.addUnit(gutter)
             });
         }
     },
diff --git a/lib/grid/index.wxml b/lib/grid/index.wxml
index fc76cc30..d40322a2 100644
--- a/lib/grid/index.wxml
+++ b/lib/grid/index.wxml
@@ -1,3 +1,3 @@
-<view class="van-grid {{ border && !gutter ? 'van-hairline--top' : '' }}" style="{{ style }}">
+<view class="van-grid {{ border && !gutter ? 'van-hairline--top' : '' }}" style="{{ viewStyle }}">
   <slot />
 </view>
diff --git a/lib/image/index.js b/lib/image/index.js
index 5e06646a..4102ce92 100644
--- a/lib/image/index.js
+++ b/lib/image/index.js
@@ -53,7 +53,8 @@ component_1.VantComponent({
     },
     data: {
         error: false,
-        loading: true
+        loading: true,
+        viewStyle: '',
     },
     mounted: function () {
         this.setMode();
@@ -78,7 +79,7 @@ component_1.VantComponent({
                 style += 'overflow: hidden;';
                 style += "border-radius: " + utils_1.addUnit(radius) + ";";
             }
-            this.setData({ style: style });
+            this.setData({ viewStyle: style });
         },
         onLoad: function (event) {
             this.setData({
diff --git a/lib/image/index.wxml b/lib/image/index.wxml
index 4724ca22..6450ba14 100644
--- a/lib/image/index.wxml
+++ b/lib/image/index.wxml
@@ -1,7 +1,7 @@
 <wxs src="../wxs/utils.wxs" module="utils" />
 
 <view
-  style="{{ style }}"
+  style="{{ viewStyle }}"
   class="custom-class {{ utils.bem('image', { round })}}"
   bind:tap="onClick"
 >
diff --git a/lib/index-anchor/index.js b/lib/index-anchor/index.js
index caea5e8c..fbc4e4bd 100644
--- a/lib/index-anchor/index.js
+++ b/lib/index-anchor/index.js
@@ -5,12 +5,7 @@ component_1.VantComponent({
     relation: {
         name: 'index-bar',
         type: 'ancestor',
-        linked: function (target) {
-            this.parent = target;
-        },
-        unlinked: function () {
-            this.parent = null;
-        }
+        current: 'index-anchor',
     },
     props: {
         useSlot: Boolean,
diff --git a/lib/index-bar/index.js b/lib/index-bar/index.js
index dd8217fd..d486a02d 100644
--- a/lib/index-bar/index.js
+++ b/lib/index-bar/index.js
@@ -14,6 +14,7 @@ component_1.VantComponent({
     relation: {
         name: 'index-anchor',
         type: 'descendant',
+        current: 'index-bar',
         linked: function () {
             this.updateData();
         },
diff --git a/lib/loading/index.js b/lib/loading/index.js
index b6318e58..eada06ec 100644
--- a/lib/loading/index.js
+++ b/lib/loading/index.js
@@ -11,5 +11,8 @@ component_1.VantComponent({
         },
         size: String,
         textSize: String
-    }
+    },
+    data: {
+        array12: Array.from({ length: 12 }),
+    },
 });
diff --git a/lib/loading/index.wxml b/lib/loading/index.wxml
index 25016e55..e934288b 100644
--- a/lib/loading/index.wxml
+++ b/lib/loading/index.wxml
@@ -7,7 +7,7 @@
   >
     <view
       wx:if="{{ type === 'spinner' }}"
-      wx:for="item in 12"
+      wx:for="{{ array12 }}"
       wx:key="index"
       class="van-loading__dot"
     />
diff --git a/lib/notify/index.js b/lib/notify/index.js
index 2d4a7d0f..1e9cea6e 100644
--- a/lib/notify/index.js
+++ b/lib/notify/index.js
@@ -27,6 +27,9 @@ component_1.VantComponent({
             value: false
         }
     },
+    data: {
+        show: false,
+    },
     created: function () {
         var statusBarHeight = wx.getSystemInfoSync().statusBarHeight;
         this.setData({ statusBarHeight: statusBarHeight });
diff --git a/lib/radio-group/index.js b/lib/radio-group/index.js
index 7ffda27e..23e07264 100644
--- a/lib/radio-group/index.js
+++ b/lib/radio-group/index.js
@@ -6,14 +6,10 @@ component_1.VantComponent({
     relation: {
         name: 'radio',
         type: 'descendant',
+        current: 'radio-group',
         linked: function (target) {
-            this.children = this.children || [];
-            this.children.push(target);
             this.updateChild(target);
         },
-        unlinked: function (target) {
-            this.children = this.children.filter(function (child) { return child !== target; });
-        }
     },
     props: {
         value: {
diff --git a/lib/radio/index.js b/lib/radio/index.js
index 9371b95d..f422e331 100644
--- a/lib/radio/index.js
+++ b/lib/radio/index.js
@@ -6,12 +6,7 @@ component_1.VantComponent({
     relation: {
         name: 'radio-group',
         type: 'ancestor',
-        linked: function (target) {
-            this.parent = target;
-        },
-        unlinked: function () {
-            this.parent = null;
-        }
+        current: 'radio',
     },
     classes: ['icon-class', 'label-class'],
     props: {
diff --git a/lib/rate/index.js b/lib/rate/index.js
index c1d8cc26..a10269c3 100644
--- a/lib/rate/index.js
+++ b/lib/rate/index.js
@@ -50,7 +50,10 @@ component_1.VantComponent({
         },
         count: {
             type: Number,
-            value: 5
+            value: 5,
+            observer: function (value) {
+                this.setData({ innerCountArray: Array.from({ length: value }) });
+            },
         },
         gutter: null,
         touchable: {
@@ -59,7 +62,8 @@ component_1.VantComponent({
         }
     },
     data: {
-        innerValue: 0
+        innerValue: 0,
+        innerCountArray: Array.from({ length: 5 }),
     },
     methods: {
         onSelect: function (event) {
diff --git a/lib/rate/index.wxml b/lib/rate/index.wxml
index 9233c10a..58eee5cd 100644
--- a/lib/rate/index.wxml
+++ b/lib/rate/index.wxml
@@ -6,7 +6,7 @@
 >
   <view
     class="van-rate__item"
-    wx:for="{{ count }}"
+    wx:for="{{ innerCountArray }}"
     wx:key="index"
     style="padding-right: {{ index !== count - 1 ? utils.addUnit(gutter) : '' }}"
   >
diff --git a/lib/row/index.js b/lib/row/index.js
index ef822be0..2f9bd3a8 100644
--- a/lib/row/index.js
+++ b/lib/row/index.js
@@ -5,6 +5,7 @@ component_1.VantComponent({
     relation: {
         name: 'col',
         type: 'descendant',
+        current: 'row',
         linked: function (target) {
             if (this.data.gutter) {
                 target.setGutter(this.data.gutter);
@@ -17,6 +18,9 @@ component_1.VantComponent({
             observer: 'setGutter'
         }
     },
+    data: {
+        viewStyle: '',
+    },
     mounted: function () {
         if (this.data.gutter) {
             this.setGutter();
@@ -27,10 +31,10 @@ component_1.VantComponent({
             var _this = this;
             var gutter = this.data.gutter;
             var margin = "-" + Number(gutter) / 2 + "px";
-            var style = gutter
+            var viewStyle = gutter
                 ? "margin-right: " + margin + "; margin-left: " + margin + ";"
                 : '';
-            this.setData({ style: style });
+            this.setData({ viewStyle: viewStyle });
             this.getRelationNodes('../col/index').forEach(function (col) {
                 col.setGutter(_this.data.gutter);
             });
diff --git a/lib/row/index.wxml b/lib/row/index.wxml
index 20c53661..ab8fcf58 100644
--- a/lib/row/index.wxml
+++ b/lib/row/index.wxml
@@ -1,3 +1,3 @@
-<view class="custom-class van-row" style="{{ style }}">
+<view class="custom-class van-row" style="{{ viewStyle }}">
   <slot />
 </view>
diff --git a/lib/sidebar-item/index.js b/lib/sidebar-item/index.js
index f7b5233b..7bff8f60 100644
--- a/lib/sidebar-item/index.js
+++ b/lib/sidebar-item/index.js
@@ -9,9 +9,7 @@ component_1.VantComponent({
     relation: {
         type: 'ancestor',
         name: 'sidebar',
-        linked: function (target) {
-            this.parent = target;
-        }
+        current: 'sidebar-item',
     },
     props: {
         dot: Boolean,
diff --git a/lib/sidebar/index.js b/lib/sidebar/index.js
index f50abbff..70b359db 100644
--- a/lib/sidebar/index.js
+++ b/lib/sidebar/index.js
@@ -5,12 +5,11 @@ component_1.VantComponent({
     relation: {
         name: 'sidebar-item',
         type: 'descendant',
-        linked: function (target) {
-            this.children.push(target);
+        current: 'sidebar',
+        linked: function () {
             this.setActive(this.data.activeKey);
         },
-        unlinked: function (target) {
-            this.children = this.children.filter(function (item) { return item !== target; });
+        unlinked: function () {
             this.setActive(this.data.activeKey);
         }
     },
@@ -22,7 +21,6 @@ component_1.VantComponent({
         }
     },
     beforeCreate: function () {
-        this.children = [];
         this.currentActive = -1;
     },
     methods: {
diff --git a/lib/skeleton/index.js b/lib/skeleton/index.js
index 135b847d..f1b826aa 100644
--- a/lib/skeleton/index.js
+++ b/lib/skeleton/index.js
@@ -6,7 +6,10 @@ component_1.VantComponent({
     props: {
         row: {
             type: Number,
-            value: 0
+            value: 0,
+            observer: function (value) {
+                this.setData({ rowArray: Array.from({ length: value }) });
+            },
         },
         title: Boolean,
         avatar: Boolean,
@@ -39,6 +42,7 @@ component_1.VantComponent({
         }
     },
     data: {
-        isArray: false
+        isArray: false,
+        rowArray: [],
     }
 });
diff --git a/lib/skeleton/index.wxml b/lib/skeleton/index.wxml
index 6f07a219..058e2efd 100644
--- a/lib/skeleton/index.wxml
+++ b/lib/skeleton/index.wxml
@@ -16,7 +16,7 @@
       style="{{ 'width:' + titleWidth }}"
     />
     <view
-      wx:for="{{ row }}"
+      wx:for="{{ rowArray }}"
       wx:key="index"
       wx:for-index="index"
       class="row-class {{ utils.bem('skeleton__row') }}"
diff --git a/lib/submit-bar/index.js b/lib/submit-bar/index.js
index 198e29a4..d5b85ac0 100644
--- a/lib/submit-bar/index.js
+++ b/lib/submit-bar/index.js
@@ -44,9 +44,11 @@ component_1.VantComponent({
     methods: {
         updatePrice: function () {
             var _a = this.data, price = _a.price, decimalLength = _a.decimalLength;
+            var priceStrArr = typeof price === 'number' && (price / 100).toFixed(decimalLength).split('.');
             this.setData({
                 hasPrice: typeof price === 'number',
-                priceStr: (price / 100).toFixed(decimalLength)
+                integerStr: priceStrArr && priceStrArr[0],
+                decimalStr: decimalLength && priceStrArr ? "." + priceStrArr[1] : ''
             });
         },
         updateTip: function () {
diff --git a/lib/submit-bar/index.wxml b/lib/submit-bar/index.wxml
index 4cdbd18d..7a623f70 100644
--- a/lib/submit-bar/index.wxml
+++ b/lib/submit-bar/index.wxml
@@ -22,18 +22,18 @@
       <text>{{ label || '合计：' }}</text>
       <text class="van-submit-bar__price price-class">
         <text class="van-submit-bar__currency">{{ currency }} </text>
-        <text>{{ priceStr }}</text>
+        <text class="van-submit-bar__price-integer">{{ integerStr }}</text><text>{{decimalStr}}</text>
       </text>
       <text class="van-submit-bar__suffix-label">{{ suffixLabel }}</text>
     </view>
     <van-button
-      square
-      size="large"
+      round
       type="{{ buttonType }}"
       loading="{{ loading }}"
       disabled="{{ disabled }}"
       class="van-submit-bar__button"
       custom-class="button-class"
+      custom-style="width: 100%;"
       bind:click="onSubmit"
     >
       {{ loading ? '' : buttonText }}
diff --git a/lib/submit-bar/index.wxss b/lib/submit-bar/index.wxss
index c21838e8..b958b9ca 100644
--- a/lib/submit-bar/index.wxss
+++ b/lib/submit-bar/index.wxss
@@ -1 +1 @@
-@import '../common/index.wxss';.van-submit-bar{position:fixed;bottom:0;left:0;width:100%;-webkit-user-select:none;user-select:none;z-index:100;z-index:var(--submit-bar-z-index,100);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__tip{padding:10px;padding:var(--submit-bar-tip-padding,10px);color:#f56723;color:var(--submit-bar-tip-color,#f56723);font-size:12px;font-size:var(--submit-bar-tip-font-size,12px);line-height:1.5;line-height:var(--submit-bar-tip-line-height,1.5);background-color:#fff7cc;background-color:var(--submit-bar-tip-background-color,#fff7cc)}.van-submit-bar__tip:empty{display:none}.van-submit-bar__tip-icon{width:12px;height:12px;margin-right:4px;vertical-align:middle;font-size:12px;font-size:var(--submit-bar-tip-icon-size,12px);min-width:18px;min-width:calc(var(--submit-bar-tip-icon-size, 12px)*1.5)}.van-submit-bar__tip-text{display:inline;vertical-align:middle}.van-submit-bar__bar{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:flex-end;justify-content:flex-end;height:50px;height:var(--submit-bar-height,50px);font-size:14px;font-size:var(--submit-bar-text-font-size,14px);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__bar--safe{padding-bottom:env(safe-area-inset-bottom)}.van-submit-bar__text{-webkit-flex:1;flex:1;text-align:right;color:#323233;color:var(--submit-bar-text-color,#323233);padding-right:12px;padding-right:var(--padding-sm,12px);font-weight:500;font-weight:var(--font-weight-bold,500)}.van-submit-bar__price{color:#ee0a24;color:var(--submit-bar-price-color,#ee0a24);font-size:18px;font-size:var(--submit-bar-price-font-size,18px)}.van-submit-bar__currency{font-size:14px;font-size:var(--submit-bar-currency-font-size,14px)}.van-submit-bar__suffix-label{margin-left:5px}.van-submit-bar__button{width:110px;width:var(--submit-bar-button-width,110px)}
\ No newline at end of file
+@import '../common/index.wxss';.van-submit-bar{position:fixed;bottom:0;left:0;width:100%;-webkit-user-select:none;user-select:none;z-index:100;z-index:var(--submit-bar-z-index,100);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__tip{padding:10px;padding:var(--submit-bar-tip-padding,10px);color:#f56723;color:var(--submit-bar-tip-color,#f56723);font-size:12px;font-size:var(--submit-bar-tip-font-size,12px);line-height:1.5;line-height:var(--submit-bar-tip-line-height,1.5);background-color:#fff7cc;background-color:var(--submit-bar-tip-background-color,#fff7cc)}.van-submit-bar__tip:empty{display:none}.van-submit-bar__tip-icon{width:12px;height:12px;margin-right:4px;vertical-align:middle;font-size:12px;font-size:var(--submit-bar-tip-icon-size,12px);min-width:18px;min-width:calc(var(--submit-bar-tip-icon-size, 12px)*1.5)}.van-submit-bar__tip-text{display:inline;vertical-align:middle}.van-submit-bar__bar{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:flex-end;justify-content:flex-end;padding:0 16px;padding:var(--submit-bar-padding,0 16px);height:50px;height:var(--submit-bar-height,50px);font-size:14px;font-size:var(--submit-bar-text-font-size,14px);background-color:#fff;background-color:var(--submit-bar-background-color,#fff)}.van-submit-bar__bar--safe{padding-bottom:env(safe-area-inset-bottom)}.van-submit-bar__text{-webkit-flex:1;flex:1;text-align:right;color:#323233;color:var(--submit-bar-text-color,#323233);padding-right:12px;padding-right:var(--padding-sm,12px)}.van-submit-bar__price,.van-submit-bar__text{font-weight:500;font-weight:var(--font-weight-bold,500)}.van-submit-bar__price{color:#ee0a24;color:var(--submit-bar-price-color,#ee0a24);font-size:12px;font-size:var(--submit-bar-price-font-size,12px)}.van-submit-bar__price-integer{font-size:20px;font-family:Avenir-Heavy,PingFang SC,Helvetica Neue,Arial,sans-serif}.van-submit-bar__currency{font-size:12px;font-size:var(--submit-bar-currency-font-size,12px)}.van-submit-bar__suffix-label{margin-left:5px}.van-submit-bar__button{width:110px;width:var(--submit-bar-button-width,110px);font-weight:500;font-weight:var(--font-weight-bold,500);--button-default-height:40px!important;--button-default-height:var(--submit-bar-button-height,40px)!important;--button-line-height:40px!important;--button-line-height:var(--submit-bar-button-height,40px)!important}
\ No newline at end of file
diff --git a/lib/tab/index.js b/lib/tab/index.js
index b6446007..96d38644 100644
--- a/lib/tab/index.js
+++ b/lib/tab/index.js
@@ -5,12 +5,7 @@ component_1.VantComponent({
     relation: {
         name: 'tabs',
         type: 'ancestor',
-        linked: function (target) {
-            this.parent = target;
-        },
-        unlinked: function () {
-            this.parent = null;
-        }
+        current: 'tab',
     },
     props: {
         dot: {
diff --git a/lib/tabbar-item/index.js b/lib/tabbar-item/index.js
index 98b76f90..2d7880b1 100644
--- a/lib/tabbar-item/index.js
+++ b/lib/tabbar-item/index.js
@@ -10,7 +10,8 @@ component_1.VantComponent({
     },
     relation: {
         name: 'tabbar',
-        type: 'ancestor'
+        type: 'ancestor',
+        current: 'tabbar-item',
     },
     data: {
         active: false
diff --git a/lib/tabbar/index.js b/lib/tabbar/index.js
index e3f60588..e41c5963 100644
--- a/lib/tabbar/index.js
+++ b/lib/tabbar/index.js
@@ -5,13 +5,12 @@ component_1.VantComponent({
     relation: {
         name: 'tabbar-item',
         type: 'descendant',
+        current: 'tabbar',
         linked: function (target) {
-            this.children.push(target);
             target.parent = this;
             target.updateFromParent();
         },
-        unlinked: function (target) {
-            this.children = this.children.filter(function (item) { return item !== target; });
+        unlinked: function () {
             this.updateChildren();
         }
     },
@@ -45,9 +44,6 @@ component_1.VantComponent({
             value: true
         }
     },
-    beforeCreate: function () {
-        this.children = [];
-    },
     methods: {
         updateChildren: function () {
             var children = this.children;
diff --git a/lib/tabs/index.js b/lib/tabs/index.js
index e2096d5c..3daf019d 100644
--- a/lib/tabs/index.js
+++ b/lib/tabs/index.js
@@ -9,14 +9,13 @@ component_1.VantComponent({
     relation: {
         name: 'tab',
         type: 'descendant',
+        current: 'tabs',
         linked: function (target) {
-            target.index = this.children.length;
-            this.children.push(target);
+            target.index = this.children.length - 1;
             this.updateTabs();
         },
-        unlinked: function (target) {
+        unlinked: function () {
             this.children = this.children
-                .filter(function (child) { return child !== target; })
                 .map(function (child, index) {
                 child.index = index;
                 return child;
@@ -108,16 +107,14 @@ component_1.VantComponent({
         currentIndex: null,
         container: null
     },
-    beforeCreate: function () {
-        this.children = [];
-    },
     mounted: function () {
         var _this = this;
         this.setData({
             container: function () { return _this.createSelectorQuery().select('.van-tabs'); }
+        }, function () {
+            _this.setLine(true);
+            _this.scrollIntoView();
         });
-        this.setLine(true);
-        this.scrollIntoView();
     },
     methods: {
         updateTabs: function () {
@@ -128,16 +125,16 @@ component_1.VantComponent({
             });
             this.setCurrentIndexByName(this.getCurrentName() || data.active);
         },
-        trigger: function (eventName) {
+        trigger: function (eventName, child) {
             var currentIndex = this.data.currentIndex;
-            var child = this.children[currentIndex];
-            if (!utils_1.isDef(child)) {
+            var currentChild = child || this.children[currentIndex];
+            if (!utils_1.isDef(currentChild)) {
                 return;
             }
             this.$emit(eventName, {
-                index: currentIndex,
-                name: child.getComputedName(),
-                title: child.data.title
+                index: currentChild.index,
+                name: currentChild.getComputedName(),
+                title: currentChild.data.title
             });
         },
         onTap: function (event) {
@@ -145,7 +142,7 @@ component_1.VantComponent({
             var index = event.currentTarget.dataset.index;
             var child = this.children[index];
             if (child.data.disabled) {
-                this.trigger('disabled');
+                this.trigger('disabled', child);
             }
             else {
                 this.setCurrentIndex(index);