doc: submenu popupOffset, close #5312

Author: tangjinzhou

components/menu/index.en-US.md

@@ -71,13 +71,14 @@ More layouts with navigation: [Layout](/components/layout).
 
 ### Menu.SubMenu
 
-| Param          | Description                         | Type         | Default value | Version |
-| -------------- | ----------------------------------- | ------------ | ------------- | ------- |
-| disabled       | whether sub menu is disabled or not | boolean      | false         |         |
-| expandIcon     | Customized expandIcon               | slot         | arrow icon    | ｜      |
-| key            | Unique ID of the sub menu, required | string       |               |         |
-| popupClassName | Sub-menu class name                 | string       |               | 1.5.0   |
-| title          | title of the sub menu               | string\|slot |               |         |
+| Param | Description | Type | Default value | Version |
+| --- | --- | --- | --- | --- |
+| disabled | whether sub menu is disabled or not | boolean | false |  |
+| expandIcon | Customized expandIcon | slot | arrow icon | ｜ |
+| key | Unique ID of the sub menu, required | string |  |  |
+| popupClassName | Sub-menu class name | string |  | 1.5.0 |
+| popupOffset | Sub-menu offset, not working when `mode="inline"` | \[number, number] | - |  |
+| title | title of the sub menu | string\|slot |  |  |
 
 The children of Menu.SubMenu must be `MenuItem` or `SubMenu`.
 

components/menu/index.zh-CN.md

@@ -72,14 +72,15 @@ cover: https://gw.alipayobjects.com/zos/alicdn/3XZcjGpvK/Menu.svg
 
 ### Menu.SubMenu
 
-| 参数           | 说明                     | 类型         | 默认值   | 版本  |
-| -------------- | ------------------------ | ------------ | -------- | ----- |
-| disabled       | 是否禁用                 | boolean      | false    |       |
-| expandIcon     | 自定义 Menu 展开收起图标 | slot         | 箭头图标 |       |
-| icon           | 菜单图标                 | slot         |          | 2.8.0 |
-| key            | 唯一标志, 必填           | string       |          |       |
-| popupClassName | 子菜单样式               | string       |          | 1.5.0 |
-| title          | 子菜单项值               | string\|slot |          |       |
+| 参数           | 说明                                 | 类型              | 默认值   | 版本  |
+| -------------- | ------------------------------------ | ----------------- | -------- | ----- |
+| disabled       | 是否禁用                             | boolean           | false    |       |
+| expandIcon     | 自定义 Menu 展开收起图标             | slot              | 箭头图标 |       |
+| icon           | 菜单图标                             | slot              |          | 2.8.0 |
+| key            | 唯一标志, 必填                       | string            |          |       |
+| popupClassName | 子菜单样式                           | string            |          | 1.5.0 |
+| popupOffset    | 子菜单偏移量，`mode="inline"` 时无效 | \[number, number] | -        |       |
+| title          | 子菜单项值                           | string\|slot      |          |       |
 
 Menu.SubMenu 的子元素必须是 `MenuItem` 或者 `SubMenu`.
 

components/menu/src/SubMenu.tsx

@@ -28,7 +28,7 @@ const subMenuProps = {
   disabled: Boolean,
   level: Number,
   popupClassName: String,
-  popupOffset: Array as PropType<number[]>,
+  popupOffset: Array as unknown as PropType<[number, number]>,
   internalPopupClose: Boolean,
   eventKey: String,
   expandIcon: Function as PropType<(p?: { isOpen: boolean; [key: string]: any }) => any>,