diff --git a/docs/demos/views/cell.vue b/docs/demos/views/cell.vue
index f7af4a818..6f2277ba2 100644
--- a/docs/demos/views/cell.vue
+++ b/docs/demos/views/cell.vue
@@ -73,9 +73,7 @@ export default {
   .van-cell-text {
     margin-right: 5px;
   }
-  .van-cell__right-icon {
-    font-size: 16px;
-  }
+
   .van-cell-text,
   .van-tag--danger {
     vertical-align: middle;
diff --git a/docs/markdown/en-US/nav-bar.md b/docs/markdown/en-US/nav-bar.md
index aaf2948ee..60d26d88a 100644
--- a/docs/markdown/en-US/nav-bar.md
+++ b/docs/markdown/en-US/nav-bar.md
@@ -52,6 +52,7 @@ export default {
 | right-text | Right Text | `String` | `''` | - |
 | left-arrow | Whether to show left arrow | `Boolean` | `false` | - |
 | fixed | Whether to fixed top | `Boolean` | `false` | - |
+| z-index | Z-index | `Number` | `1` | - |
 
 ### Slot
 
diff --git a/docs/markdown/zh-CN/nav-bar.md b/docs/markdown/zh-CN/nav-bar.md
index 073856423..d9d00a927 100644
--- a/docs/markdown/zh-CN/nav-bar.md
+++ b/docs/markdown/zh-CN/nav-bar.md
@@ -53,6 +53,7 @@ export default {
 | right-text | 右侧文案 | `String` | `''` | - |
 | left-arrow | 是否显示左侧箭头 | `Boolean` | `false` | - |
 | fixed | 是否固定在顶部 | `Boolean` | `false` | - |
+| z-index | 元素 z-index | `Number` | `1` | - |
 
 ### Slot
 
diff --git a/packages/address-edit/index.vue b/packages/address-edit/index.vue
index a7146ae85..86ae309cc 100644
--- a/packages/address-edit/index.vue
+++ b/packages/address-edit/index.vue
@@ -263,10 +263,12 @@ export default create({
     setAreaCode(code) {
       this.currentInfo.area_code = code;
       this.$nextTick(() => {
-        const { area } = this.$refs;
-        if (area) {
-          this.assignAreaValues(area.getValues());
-        }
+        this.$nextTick(() => {
+          const { area } = this.$refs;
+          if (area) {
+            this.assignAreaValues(area.getValues());
+          }
+        });
       });
     }
   }
diff --git a/packages/area/index.vue b/packages/area/index.vue
index e7551f316..b01e9cf6f 100644
--- a/packages/area/index.vue
+++ b/packages/area/index.vue
@@ -35,11 +35,14 @@ export default create({
   },
 
   computed: {
+    listValid() {
+      return this.areaList && typeof this.areaList.province_list === 'object';
+    },
+
     columns() {
       const columns = [];
-      const { areaList } = this;
 
-      if (!areaList || typeof areaList.province_list !== 'object') {
+      if (!this.listValid) {
         return columns;
       }
 
@@ -91,6 +94,10 @@ export default create({
 
     // 根据省市县类型和对应的`code`获取对应列表
     getList(type, code) {
+      if (!this.listValid) {
+        return [];
+      }
+
       const { areaList } = this;
       const list =
         type === 'province'
@@ -118,11 +125,10 @@ export default create({
     getIndex(type, code) {
       const compareNum = type === 'province' ? 2 : type === 'city' ? 4 : 6;
       const areaList = this.getList(type, code.slice(0, compareNum - 2));
+      code = code.slice(0, compareNum);
 
       for (let i = 0; i < areaList.length; i++) {
-        if (
-          +areaList[i].code.slice(0, compareNum) === +code.slice(0, compareNum)
-        ) {
+        if (areaList[i].code.slice(0, compareNum) === code) {
           return i;
         }
       }
diff --git a/packages/locale/lang/zh-CN.js b/packages/locale/lang/zh-CN.js
index ebd5cf04c..074fa1f3c 100644
--- a/packages/locale/lang/zh-CN.js
+++ b/packages/locale/lang/zh-CN.js
@@ -86,9 +86,9 @@ export default {
       name: '名字',
       tel: '手机或固定电话',
       postal: '邮政编码(选填)',
-      province: '选择省',
-      city: '选择市',
-      county: '选择区'
+      province: '选择省份',
+      city: '选择城市',
+      county: '选择地区'
     }
   },
   vanAddressEditDetail: {
diff --git a/packages/nav-bar/index.vue b/packages/nav-bar/index.vue
index 36329689e..3bf32636d 100644
--- a/packages/nav-bar/index.vue
+++ b/packages/nav-bar/index.vue
@@ -1,5 +1,9 @@
 <template>
-  <div class="van-nav-bar van-hairline--top-bottom" :class="{ 'van-nav-bar--fixed': fixed }">
+  <div
+    class="van-nav-bar van-hairline--top-bottom"
+    :class="{ 'van-nav-bar--fixed': fixed }"
+    :style="style"
+  >
     <div class="van-nav-bar__left" @click="$emit('click-left')">
       <slot name="left">
         <icon v-if="leftArrow" class="van-nav-bar__arrow" name="arrow" />
@@ -28,7 +32,19 @@ export default create({
     leftText: String,
     rightText: String,
     leftArrow: Boolean,
-    fixed: Boolean
+    fixed: Boolean,
+    zIndex: {
+      type: Number,
+      default: 1
+    }
+  },
+
+  computed: {
+    style() {
+      return {
+        zIndex: this.zIndex
+      };
+    }
   }
 });
 </script>
diff --git a/packages/picker/PickerColumn.vue b/packages/picker/PickerColumn.vue
index 798dccb9c..5d42e683f 100644
--- a/packages/picker/PickerColumn.vue
+++ b/packages/picker/PickerColumn.vue
@@ -17,7 +17,7 @@
           'van-picker-column--disabled': isDisabled(option),
           'van-picker-column--selected': index === currentIndex
         }"
-        @click="setIndex(index)"
+        @click="setIndex(index, true)"
       />
     </ul>
   </div>
@@ -134,8 +134,7 @@ export default create({
           0,
           this.count - 1
         ]);
-        this.setIndex(index);
-        this.$emit('change', index);
+        this.setIndex(index, true);
       }
     },
 
@@ -157,10 +156,14 @@ export default create({
       return typeof option === 'object' && this.valueKey in option ? option[this.valueKey] : option;
     },
 
-    setIndex(index) {
+    setIndex(index, userAction) {
       index = this.adjustIndex(index);
       this.offset = -index * this.itemHeight;
-      this.currentIndex = index;
+
+      if (index !== this.currentIndex) {
+        this.currentIndex = index;
+        userAction && this.$emit('change', index);
+      }
     },
 
     setValue(value) {
diff --git a/packages/pull-refresh/index.vue b/packages/pull-refresh/index.vue
index 2e8b35bcb..82587b256 100644
--- a/packages/pull-refresh/index.vue
+++ b/packages/pull-refresh/index.vue
@@ -111,9 +111,9 @@ export default create({
 
       if (this.ceiling && this.deltaY >= 0) {
         if (this.direction === 'vertical') {
+          this.getStatus(this.ease(this.deltaY));
           event.preventDefault();
         }
-        this.getStatus(this.ease(this.deltaY));
       }
     },
 
diff --git a/packages/vant-css/src/cell.css b/packages/vant-css/src/cell.css
index fec977931..021ee98b2 100644
--- a/packages/vant-css/src/cell.css
+++ b/packages/vant-css/src/cell.css
@@ -56,7 +56,7 @@
     }
 
     &--link {
-      padding-right: 20px;
+      padding-right: 15px;
     }
   }
 
diff --git a/test/unit/specs/address-edit.spec.js b/test/unit/specs/address-edit.spec.js
index 14d9805f8..a7765506d 100644
--- a/test/unit/specs/address-edit.spec.js
+++ b/test/unit/specs/address-edit.spec.js
@@ -17,13 +17,13 @@ describe('AddressEdit', () => {
     expect(wrapper.find('.van-field__control')[2].element.value).to.equal('');
     expect(
       wrapper.find('.van-address-edit__area .van-cell__value span')[0].text()
-    ).to.equal('选择省');
+    ).to.equal('选择省份');
     expect(
       wrapper.find('.van-address-edit__area .van-cell__value span')[1].text()
-    ).to.equal('选择市');
+    ).to.equal('选择城市');
     expect(
       wrapper.find('.van-address-edit__area .van-cell__value span')[2].text()
-    ).to.equal('选择区');
+    ).to.equal('选择地区');
   });
 
   it('create a AddressEdit with props', () => {