diff --git a/examples/docs/date-picker.md b/examples/docs/date-picker.md
index cdc954171..9f29bbb60 100644
--- a/examples/docs/date-picker.md
+++ b/examples/docs/date-picker.md
@@ -120,32 +120,34 @@
 <script>
   export default {
     data() {
-     return {
-       pickerOptions1: {
-         shortcuts: [{
-           text: '今天',
-           onClick(picker) {
-             picker.$emit('pick', new Date());
-           }
-         }, {
-           text: '昨天',
-           onClick(picker) {
-             const date = new Date();
-             picker.$emit('pick', date.getTime() - 3600 * 1000 * 24);
-           }
-         }, {
-           text: '一周前',
-           onClick(picker) {
-             const date = new Date();
-             picker.$emit('pick', date.getTime() - 3600 * 1000 * 24 * 7);
-           }
-         }]
-       },
-       value1: '',
-       value2: '',
-     };
+      return {
+        pickerOptions1: {
+          shortcuts: [{
+            text: '今天',
+            onClick(picker) {
+              picker.$emit('pick', new Date());
+            }
+          }, {
+            text: '昨天',
+            onClick(picker) {
+              const date = new Date();
+              date.setTime(date.getTime() - 3600 * 1000 * 24);
+              picker.$emit('pick', date);
+            }
+          }, {
+            text: '一周前',
+            onClick(picker) {
+              const date = new Date();
+              date.setTime(date.getTime() - 3600 * 1000 * 24 * 7);
+              picker.$emit('pick', date);
+            }
+          }]
+        },
+        value1: '',
+        value2: '',
+      };
     }
-    };
+  };
 </script>
 ```
 :::
@@ -216,36 +218,39 @@
 <script>
   export default {
     data() {
-     return {
-       pickerOptions2: {
-         shortcuts: [{
-           text: '最近一周',
-           onClick(picker) {
-             const end = new Date();
-             const start = end.getTime() - 3600 * 1000 * 24 * 7;
-             picker.$emit('pick', [start, end]);
-           }
-         }, {
-           text: '最近一个月',
-           onClick(picker) {
-             const end = new Date();
-             const start = end.getTime() - 3600 * 1000 * 24 * 30;
-             picker.$emit('pick', [start, end]);
-           }
-         }, {
-           text: '最近三个月',
-           onClick(picker) {
-             const end = new Date();
-             const start = end.getTime() - 3600 * 1000 * 24 * 90;
-             picker.$emit('pick', [start, end]);
-           }
-         }]
-       },
-       value6: '',
-       value7: ''
-     };
+      return {
+        pickerOptions2: {
+          shortcuts: [{
+            text: '最近一周',
+            onClick(picker) {
+              const end = new Date();
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
+              picker.$emit('pick', [start, end]);
+            }
+          }, {
+            text: '最近一个月',
+            onClick(picker) {
+              const end = new Date();
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
+              picker.$emit('pick', [start, end]);
+            }
+          }, {
+            text: '最近三个月',
+            onClick(picker) {
+              const end = new Date();
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
+              picker.$emit('pick', [start, end]);
+            }
+          }]
+        },
+        value6: '',
+        value7: ''
+      };
     }
-    };
+  };
 </script>
 ```
 :::
diff --git a/examples/docs/datetime-picker.md b/examples/docs/datetime-picker.md
index b46949469..3fcb53a15 100644
--- a/examples/docs/datetime-picker.md
+++ b/examples/docs/datetime-picker.md
@@ -77,7 +77,7 @@
     padding: 0;
     display: flex;
   }
-  
+
   .demo-datetime-picker .block {
     padding: 30px 0;
     text-align: center;
@@ -87,7 +87,7 @@
       border-right: none;
     }
   }
-  
+
   .demo-datetime-picker .demonstration {
     display: block;
     color: #8492a6;
@@ -138,13 +138,15 @@
             text: '昨天',
             onClick(picker) {
               const date = new Date();
-              picker.$emit('pick', new Date(date.getTime() - 3600 * 1000 * 24));
+              date.setTime(date.getTime() - 3600 * 1000 * 24);
+              picker.$emit('pick', date);
             }
           }, {
             text: '一周前',
             onClick(picker) {
               const date = new Date();
-              picker.$emit('pick', new Date(date.getTime() - 3600 * 1000 * 24 * 7));
+              date.setTime(date.getTime() - 3600 * 1000 * 24 * 7);
+              picker.$emit('pick', date);
             }
           }]
         },
@@ -192,21 +194,24 @@
             text: '最近一周',
             onClick(picker) {
               const end = new Date();
-              const start = end.getTime() - 3600 * 1000 * 24 * 7;
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
               picker.$emit('pick', [start, end]);
             }
-           }, {
+          }, {
             text: '最近一个月',
             onClick(picker) {
               const end = new Date();
-              const start = end.getTime() - 3600 * 1000 * 24 * 30;
-              picker.$emit('pick', [start, end]); 
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
+              picker.$emit('pick', [start, end]);
             }
-           }, {
+          }, {
             text: '最近三个月',
             onClick(picker) {
               const end = new Date();
-              const start = end.getTime() - 3600 * 1000 * 24 * 90;
+              const start = new Date();
+              start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
               picker.$emit('pick', [start, end]);
             }
           }]
diff --git a/examples/docs/message.md b/examples/docs/message.md
index b97fd6d40..1ee2fd0bb 100644
--- a/examples/docs/message.md
+++ b/examples/docs/message.md
@@ -189,11 +189,11 @@
 ```
 :::
 
-## 全局方法
+### 全局方法
 
 element 为 Vue.prototype 添加了全局方法 $message。因此在 vue instance 中可以采用本页面中的方式调用 `Message`。
 
-## 单独引用
+### 单独引用
 
 单独引入 `Message`：
 
@@ -203,7 +203,7 @@ import { Message } from 'element-ui';
 
 此时调用方法为 `Message(options)`。
 
-## Options
+### Options
 | 参数      | 说明          | 类型      | 可选值                           | 默认值  |
 |---------- |-------------- |---------- |--------------------------------  |-------- |
 | message | 消息文字 | string | — | — |