diff --git a/src/slider/README.md b/src/slider/README.md
index ca16876bb..e09be4f28 100644
--- a/src/slider/README.md
+++ b/src/slider/README.md
@@ -168,11 +168,11 @@ export default {
 
 ### Slots
 
-| Name         | Description                    | Arguments         |
-| ------------ | ------------------------------ | ----------------- |
-| button       | Custom button                  | -                 |
-| left-button  | Custom left button (in range)  | { value: number } |
-| right-button | Custom right button (in range) | { value: number } |
+| Name                    | Description                    | Arguments         |
+| ----------------------- | ------------------------------ | ----------------- |
+| button                  | Custom button                  | -                 |
+| left-button `v2.12.38`  | Custom left button (in range)  | { value: number } |
+| right-button `v2.12.38` | Custom right button (in range) | { value: number } |
 
 ### Less Variables
 
diff --git a/src/slider/README.zh-CN.md b/src/slider/README.zh-CN.md
index 829284e68..13d0d1a26 100644
--- a/src/slider/README.zh-CN.md
+++ b/src/slider/README.zh-CN.md
@@ -174,11 +174,11 @@ export default {
 
 ### Slots
 
-| 名称         | 说明                               | 参数              |
-| ------------ | ---------------------------------- | ----------------- |
-| button       | 自定义滑动按钮                     | -                 |
-| left-button  | 自定义左侧滑块按钮（双滑块模式下） | { value: number } |
-| right-button | 自定义右侧滑块按钮（双滑块模式下） | { value: number } |
+| 名称 | 说明 | 参数 |
+| --- | --- | --- |
+| button | 自定义滑动按钮 | - |
+| left-button `v2.12.38` | 自定义左侧滑块按钮（双滑块模式下） | { value: number } |
+| right-button `v2.12.38` | 自定义右侧滑块按钮（双滑块模式下） | { value: number } |
 
 ### 样式变量
 
diff --git a/src/slider/index.js b/src/slider/index.js
index 2213aa2e2..fe91d9ddb 100644
--- a/src/slider/index.js
+++ b/src/slider/index.js
@@ -236,33 +236,38 @@ export default createComponent({
     const renderButton = (i) => {
       const map = ['left', 'right'];
       const isNumber = typeof i === 'number';
-      const current = isNumber ? this.value[i] : this.value
+      const current = isNumber ? this.value[i] : this.value;
+
       const getClassName = () => {
         if (isNumber) {
           return `button-wrapper-${map[i]}`;
         }
         return `button-wrapper`;
       };
+
       const getRefName = () => {
         if (isNumber) {
           return `wrapper${i}`;
         }
         return `wrapper`;
       };
+
       const renderButtonContent = () => {
         if (isNumber) {
-          const slot = this.slots(i === 0 ? 'left-button' : 'right-button', {value: current})
+          const slot = this.slots(i === 0 ? 'left-button' : 'right-button', {
+            value: current,
+          });
           if (slot) {
-            return slot
+            return slot;
           }
         }
+
         if (this.slots('button')) {
-          return this.slots('button')
+          return this.slots('button');
         }
-        return (
-          <div class={bem('button')} style={this.buttonStyle} />
-        )
-      }
+
+        return <div class={bem('button')} style={this.buttonStyle} />;
+      };
 
       return (
         <div