docs: fix some mistakes (#8208)

src/area/README.md

@@ -103,10 +103,10 @@ An object contains three properties: `province_list`, `city_list` and `county_li
 Example of `AreaList`
 
 ```js
-{
+export default {
   province_list: {
     110000: 'Beijing',
-    330000: 'Zhejiang Province'
+    330000: 'Zhejiang Province',
   },
   city_list: {
     110100: 'Beijing City',
@@ -116,12 +116,12 @@ Example of `AreaList`
     110101: 'Dongcheng District',
     110102: 'Xicheng District',
     110105: 'Chaoyang District',
-    110106: 'Fengtai District'
+    110106: 'Fengtai District',
     330105: 'Gongshu District',
     330106: 'Xihu District',
     // ....
-  }
-}
+  },
+};
 ```
 
 All code of China: [Area.json](https://github.com/youzan/vant/blob/dev/src/area/demo/area-en.js)

src/area/README.zh-CN.md

@@ -105,30 +105,30 @@ app.use(Area);
 `AreaList`具体格式如下：
 
 ```js
-{
+export default {
   province_list: {
     110000: '北京市',
-    120000: '天津市'
+    120000: '天津市',
   },
   city_list: {
     110100: '北京市',
     110200: '县',
     120100: '天津市',
-    120200: '县'
+    120200: '县',
   },
   county_list: {
     110101: '东城区',
     110102: '西城区',
     110105: '朝阳区',
-    110106: '丰台区'
+    110106: '丰台区',
     120101: '和平区',
     120102: '河东区',
     120103: '河西区',
     120104: '南开区',
     120105: '河北区',
     // ....
-  }
-}
+  },
+};
 ```
 
 完整数据见 [Area.json](https://github.com/youzan/vant/blob/dev/src/area/demo/area.js)

src/datetime-picker/README.md

@@ -66,7 +66,8 @@ export default {
     const formatter = (type, val) => {
       if (type === 'year') {
         return `${val} Year`;
-      } else if (type === 'month') {
+      }
+      if (type === 'month') {
         return `${val} Month`;
       }
       return val;
@@ -105,7 +106,8 @@ export default {
     const formatter = (type, val) => {
       if (type === 'month') {
         return `${val} Month`;
-      } else if (type === 'day') {
+      }
+      if (type === 'day') {
         return `${val} Day`;
       }
       return val;

src/datetime-picker/README.zh-CN.md

@@ -70,7 +70,8 @@ export default {
     const formatter = (type, val) => {
       if (type === 'year') {
         return `${val}年`;
-      } else if (type === 'month') {
+      }
+      if (type === 'month') {
         return `${val}月`;
       }
       return val;
@@ -111,7 +112,8 @@ export default {
     const formatter = (type, val) => {
       if (type === 'month') {
         return `${val}月`;
-      } else if (type === 'day') {
+      }
+      if (type === 'day') {
         return `${val}日`;
       }
       return val;

src/dropdown-menu/README.md

@@ -99,7 +99,7 @@ export default {
     return {
       item,
       state,
-      option,
+      options,
       onConfirm,
     };
   },

src/dropdown-menu/README.zh-CN.md

@@ -105,7 +105,7 @@ export default {
     return {
       item,
       state,
-      option,
+      options,
       onConfirm,
     };
   },

src/picker/README.md

@@ -267,8 +267,6 @@ export default {
 ```
 
 ```js
-import { reactive } from 'vue';
-
 export default {
   setup() {
     const columns = [

src/picker/README.zh-CN.md

@@ -290,8 +290,6 @@ export default {
 ```
 
 ```js
-import { reactive } from 'vue';
-
 export default {
   setup() {
     const columns = [

src/uploader/README.md

@@ -199,7 +199,7 @@ export default {
           Toast('Please upload an image in jpg format');
           reject();
         } else {
-          let img = new File(['foo'], 'bar.jpg', {
+          const img = new File(['foo'], 'bar.jpg', {
             type: 'image/jpeg',
           });
           resolve(img);
@@ -251,10 +251,9 @@ export default {
         previewSize: 120,
       },
     ]);
-    return {
-      fileList:
-    };
-  }
+
+    return { fileList };
+  },
 };
 ```
 

src/uploader/README.zh-CN.md

@@ -222,7 +222,7 @@ export default {
           Toast('请上传 jpg 格式图片');
           reject();
         } else {
-          let img = new File(['foo'], 'bar.jpg', {
+          const img = new File(['foo'], 'bar.jpg', {
             type: 'image/jpeg',
           });
           resolve(img);
@@ -276,10 +276,9 @@ export default {
         previewSize: 120,
       },
     ]);
-    return {
-      fileList:
-    };
-  }
+
+    return { fileList };
+  },
 };
 ```