diff --git a/dist/calendar/index.js b/dist/calendar/index.js
index 8bdc6bbd..0d2c61a7 100644
--- a/dist/calendar/index.js
+++ b/dist/calendar/index.js
@@ -170,7 +170,8 @@ VantComponent({
                     defaultDate = [];
                 }
                 const [startDay, endDay] = defaultDate || [];
-                const start = this.limitDateRange(startDay || now, minDate, getPrevDay(new Date(maxDate)).getTime());
+                const startDate = getTime(startDay || now);
+                const start = this.limitDateRange(startDate, minDate, allowSameDay ? startDate : getPrevDay(new Date(maxDate)).getTime());
                 const date = getTime(endDay || now);
                 const end = this.limitDateRange(date, allowSameDay ? date : getNextDay(new Date(minDate)).getTime());
                 return [start, end];
diff --git a/dist/common/utils.d.ts b/dist/common/utils.d.ts
index 719f2ed7..0f3bc874 100644
--- a/dist/common/utils.d.ts
+++ b/dist/common/utils.d.ts
@@ -14,4 +14,6 @@ export declare function getRect(context: WechatMiniprogram.Component.TrivialInst
 export declare function getAllRect(context: WechatMiniprogram.Component.TrivialInstance, selector: string): Promise<WechatMiniprogram.BoundingClientRectCallbackResult[]>;
 export declare function groupSetData(context: WechatMiniprogram.Component.TrivialInstance, cb: () => void): void;
 export declare function toPromise(promiseLike: Promise<unknown> | unknown): Promise<unknown>;
+export declare function addNumber(num1: any, num2: any): number;
+export declare const clamp: (num: any, min: any, max: any) => number;
 export declare function getCurrentPage<T>(): T & WechatMiniprogram.OptionalInterface<WechatMiniprogram.Page.ILifetime> & WechatMiniprogram.Page.InstanceProperties & WechatMiniprogram.Page.InstanceMethods<WechatMiniprogram.IAnyObject> & WechatMiniprogram.Page.Data<WechatMiniprogram.IAnyObject> & WechatMiniprogram.IAnyObject;
diff --git a/dist/common/utils.js b/dist/common/utils.js
index f81f5f4e..78afc950 100644
--- a/dist/common/utils.js
+++ b/dist/common/utils.js
@@ -70,6 +70,13 @@ export function toPromise(promiseLike) {
     }
     return Promise.resolve(promiseLike);
 }
+// 浮点数精度处理
+export function addNumber(num1, num2) {
+    const cardinal = Math.pow(10, 10);
+    return Math.round((num1 + num2) * cardinal) / cardinal;
+}
+// 限制value在[min, max]之间
+export const clamp = (num, min, max) => Math.min(Math.max(num, min), max);
 export function getCurrentPage() {
     const pages = getCurrentPages();
     return pages[pages.length - 1];
diff --git a/dist/goods-action-icon/index.js b/dist/goods-action-icon/index.js
index fae0f548..98ed74f9 100644
--- a/dist/goods-action-icon/index.js
+++ b/dist/goods-action-icon/index.js
@@ -2,13 +2,14 @@ import { VantComponent } from '../common/component';
 import { button } from '../mixins/button';
 import { link } from '../mixins/link';
 VantComponent({
-    classes: ['icon-class', 'text-class'],
+    classes: ['icon-class', 'text-class', 'info-class'],
     mixins: [link, button],
     props: {
         text: String,
         dot: Boolean,
         info: String,
         icon: String,
+        size: String,
         color: String,
         classPrefix: {
             type: String,
diff --git a/dist/goods-action-icon/index.wxml b/dist/goods-action-icon/index.wxml
index eb31610d..d43c5673 100644
--- a/dist/goods-action-icon/index.wxml
+++ b/dist/goods-action-icon/index.wxml
@@ -27,10 +27,12 @@
     name="{{ icon }}"
     dot="{{ dot }}"
     info="{{ info }}"
+    size="{{ size }}"
     color="{{ color }}"
     class-prefix="{{ classPrefix }}"
     class="van-goods-action-icon__icon"
     custom-class="icon-class"
+    info-class="info-class"
   />
   <slot wx:else name="icon" />
   <text class="text-class">{{ text }}</text>
diff --git a/dist/icon/index.js b/dist/icon/index.js
index 34fee338..01c9073d 100644
--- a/dist/icon/index.js
+++ b/dist/icon/index.js
@@ -1,5 +1,6 @@
 import { VantComponent } from '../common/component';
 VantComponent({
+    classes: ['info-class'],
     props: {
         dot: Boolean,
         info: null,
diff --git a/dist/icon/index.wxml b/dist/icon/index.wxml
index 3c701745..91b47f91 100644
--- a/dist/icon/index.wxml
+++ b/dist/icon/index.wxml
@@ -9,7 +9,7 @@
     wx:if="{{ info !== null || dot }}"
     dot="{{ dot }}"
     info="{{ info }}"
-    custom-class="van-icon__info"
+    custom-class="van-icon__info info-class"
   />
   <image
     wx:if="{{ computed.isImage(name) }}"
diff --git a/dist/slider/index.js b/dist/slider/index.js
index 3f5fdf79..26f83ba6 100644
--- a/dist/slider/index.js
+++ b/dist/slider/index.js
@@ -1,7 +1,7 @@
 import { VantComponent } from '../common/component';
 import { touch } from '../mixins/touch';
 import { canIUseModel } from '../common/version';
-import { getRect, addUnit, nextTick } from '../common/utils';
+import { getRect, addUnit, nextTick, addNumber, clamp } from '../common/utils';
 const DRAG_STATUS = {
     START: 'start',
     MOVING: 'moving',
@@ -196,8 +196,12 @@ VantComponent({
             return '0%';
         },
         format(value) {
-            const { max, min, step } = this.data;
-            return Math.round(Math.max(min, Math.min(value, max)) / step) * step;
+            const min = +this.data.min;
+            const max = +this.data.max;
+            const step = +this.data.step;
+            value = clamp(value, min, max);
+            const diff = Math.round((value - min) / step) * step;
+            return addNumber(min, diff);
         },
     },
 });
diff --git a/lib/calendar/index.js b/lib/calendar/index.js
index 1974db99..f206468f 100644
--- a/lib/calendar/index.js
+++ b/lib/calendar/index.js
@@ -191,7 +191,8 @@ var getTime = function (date) {
                     defaultDate = [];
                 }
                 var _b = defaultDate || [], startDay = _b[0], endDay = _b[1];
-                var start = this.limitDateRange(startDay || now, minDate, (0, utils_1.getPrevDay)(new Date(maxDate)).getTime());
+                var startDate = getTime(startDay || now);
+                var start = this.limitDateRange(startDate, minDate, allowSameDay ? startDate : (0, utils_1.getPrevDay)(new Date(maxDate)).getTime());
                 var date = getTime(endDay || now);
                 var end = this.limitDateRange(date, allowSameDay ? date : (0, utils_1.getNextDay)(new Date(minDate)).getTime());
                 return [start, end];
diff --git a/lib/common/utils.d.ts b/lib/common/utils.d.ts
index 719f2ed7..0f3bc874 100644
--- a/lib/common/utils.d.ts
+++ b/lib/common/utils.d.ts
@@ -14,4 +14,6 @@ export declare function getRect(context: WechatMiniprogram.Component.TrivialInst
 export declare function getAllRect(context: WechatMiniprogram.Component.TrivialInstance, selector: string): Promise<WechatMiniprogram.BoundingClientRectCallbackResult[]>;
 export declare function groupSetData(context: WechatMiniprogram.Component.TrivialInstance, cb: () => void): void;
 export declare function toPromise(promiseLike: Promise<unknown> | unknown): Promise<unknown>;
+export declare function addNumber(num1: any, num2: any): number;
+export declare const clamp: (num: any, min: any, max: any) => number;
 export declare function getCurrentPage<T>(): T & WechatMiniprogram.OptionalInterface<WechatMiniprogram.Page.ILifetime> & WechatMiniprogram.Page.InstanceProperties & WechatMiniprogram.Page.InstanceMethods<WechatMiniprogram.IAnyObject> & WechatMiniprogram.Page.Data<WechatMiniprogram.IAnyObject> & WechatMiniprogram.IAnyObject;
diff --git a/lib/common/utils.js b/lib/common/utils.js
index 1e35ad27..c5e4ced7 100644
--- a/lib/common/utils.js
+++ b/lib/common/utils.js
@@ -1,6 +1,6 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.getCurrentPage = exports.toPromise = exports.groupSetData = exports.getAllRect = exports.getRect = exports.pickExclude = exports.requestAnimationFrame = exports.addUnit = exports.nextTick = exports.range = exports.getSystemInfoSync = exports.isDef = void 0;
+exports.getCurrentPage = exports.clamp = exports.addNumber = exports.toPromise = exports.groupSetData = exports.getAllRect = exports.getRect = exports.pickExclude = exports.requestAnimationFrame = exports.addUnit = exports.nextTick = exports.range = exports.getSystemInfoSync = exports.isDef = void 0;
 var validator_1 = require("./validator");
 var version_1 = require("./version");
 var validator_2 = require("./validator");
@@ -90,6 +90,15 @@ function toPromise(promiseLike) {
     return Promise.resolve(promiseLike);
 }
 exports.toPromise = toPromise;
+// 浮点数精度处理
+function addNumber(num1, num2) {
+    var cardinal = Math.pow(10, 10);
+    return Math.round((num1 + num2) * cardinal) / cardinal;
+}
+exports.addNumber = addNumber;
+// 限制value在[min, max]之间
+var clamp = function (num, min, max) { return Math.min(Math.max(num, min), max); };
+exports.clamp = clamp;
 function getCurrentPage() {
     var pages = getCurrentPages();
     return pages[pages.length - 1];
diff --git a/lib/goods-action-icon/index.js b/lib/goods-action-icon/index.js
index b11afb98..828e1f5e 100644
--- a/lib/goods-action-icon/index.js
+++ b/lib/goods-action-icon/index.js
@@ -4,13 +4,14 @@ var component_1 = require("../common/component");
 var button_1 = require("../mixins/button");
 var link_1 = require("../mixins/link");
 (0, component_1.VantComponent)({
-    classes: ['icon-class', 'text-class'],
+    classes: ['icon-class', 'text-class', 'info-class'],
     mixins: [link_1.link, button_1.button],
     props: {
         text: String,
         dot: Boolean,
         info: String,
         icon: String,
+        size: String,
         color: String,
         classPrefix: {
             type: String,
diff --git a/lib/goods-action-icon/index.wxml b/lib/goods-action-icon/index.wxml
index eb31610d..d43c5673 100644
--- a/lib/goods-action-icon/index.wxml
+++ b/lib/goods-action-icon/index.wxml
@@ -27,10 +27,12 @@
     name="{{ icon }}"
     dot="{{ dot }}"
     info="{{ info }}"
+    size="{{ size }}"
     color="{{ color }}"
     class-prefix="{{ classPrefix }}"
     class="van-goods-action-icon__icon"
     custom-class="icon-class"
+    info-class="info-class"
   />
   <slot wx:else name="icon" />
   <text class="text-class">{{ text }}</text>
diff --git a/lib/icon/index.js b/lib/icon/index.js
index 103b11ee..6758092d 100644
--- a/lib/icon/index.js
+++ b/lib/icon/index.js
@@ -2,6 +2,7 @@
 Object.defineProperty(exports, "__esModule", { value: true });
 var component_1 = require("../common/component");
 (0, component_1.VantComponent)({
+    classes: ['info-class'],
     props: {
         dot: Boolean,
         info: null,
diff --git a/lib/icon/index.wxml b/lib/icon/index.wxml
index 3c701745..91b47f91 100644
--- a/lib/icon/index.wxml
+++ b/lib/icon/index.wxml
@@ -9,7 +9,7 @@
     wx:if="{{ info !== null || dot }}"
     dot="{{ dot }}"
     info="{{ info }}"
-    custom-class="van-icon__info"
+    custom-class="van-icon__info info-class"
   />
   <image
     wx:if="{{ computed.isImage(name) }}"
diff --git a/lib/slider/index.js b/lib/slider/index.js
index 73923a23..92adca8f 100644
--- a/lib/slider/index.js
+++ b/lib/slider/index.js
@@ -195,8 +195,12 @@ var DRAG_STATUS = {
             return '0%';
         },
         format: function (value) {
-            var _a = this.data, max = _a.max, min = _a.min, step = _a.step;
-            return Math.round(Math.max(min, Math.min(value, max)) / step) * step;
+            var min = +this.data.min;
+            var max = +this.data.max;
+            var step = +this.data.step;
+            value = (0, utils_1.clamp)(value, min, max);
+            var diff = Math.round((value - min) / step) * step;
+            return (0, utils_1.addNumber)(min, diff);
         },
     },
 });