If there are too many operations to display, you can wrap them in a `Dropdown`. By clicking/hovering on the trigger, a dropdown menu should appear, which allows you to choose one option and execute relevant actions.
| getPopupContainer | to set the container of the dropdown menu. The default is to create a `div` element in `body`, you can reset it to the scrolling area and make a relative reposition. [example](https://codepen.io/afc163/pen/zEjNOy?editors=0010) | Function(triggerNode) | `() => document.body` |
| trigger | the trigger mode which executes the drop-down action, hover doesn't work on mobile device | Array<`click`\|`hover`\|`contextMenu`> | `['hover']` |
| overlay | the dropdown menu | [Menu](/components/menu) | - | |
| placement | placement of pop menu: `bottomLeft``bottomCenter``bottomRight``topLeft``topCenter``topRight` | String | `bottomLeft` | |
| size | size of the button, the same as [Button](/components/button) | string | `default` | |
| trigger | the trigger mode which executes the drop-down action | Array<`click`\|`hover`\|`contextMenu`> | `['hover']` | |
| type | type of the button, the same as [Button](/components/button) | string | `default` | |
| visible | whether the dropdown menu is visible | boolean | - | |
| onClick | a callback function, the same as [Button](/components/button), which will be executed when you click the button on the left | Function | - | |
| onVisibleChange | a callback function takes an argument: `visible`, is executed when the visible state is changed | Function | - | |