| displayRender | render function of displaying selected options, you can use slot="displayRender" and slot-scope="{labels, selectedOptions}" | `({labels, selectedOptions}) => vNode` | `labels => labels.join(' / ')` |
| expandTrigger | expand current item when click or hover, one of 'click' 'hover' | string | 'click' |
| getPopupContainer | Parent Node which the selector should be rendered to. Default to `body`. When position issues happen, try to modify it into scrollable content and position it relative. | Function(triggerNode) | () => document.body |
| loadData | To load option lazily, and it cannot work with `showSearch` | `(selectedOptions) => void` | - |
| notFoundContent | Specify content to show when no result matches. | string | 'Not Found' |
| options | data options of cascade | object | - |
| popupPlacement | use preset popup align config from builtinPlacements：`bottomLeft` `bottomRight``topLeft``topRight` | string | `bottomLeft` |
| popupVisible | set visible of cascader popup | boolean | - |
| showSearch | Whether show search input in single mode. | boolean\|object | false |
| size | input size, one of `large``default``small` | string | `default` |
| value(v-model) | selected value | string\[] | - |
Fields in `showSearch`:
| Property | Description | Type | Default |
| -------- | ----------- | ---- | ------- |
| filter | The function will receive two arguments, inputValue and option, if the function returns true, the option will be included in the filtered set; Otherwise, it will be excluded. | `function(inputValue, path): boolean` | |
| matchInputWidth | Whether the width of result list equals to input's | boolean | |
| render | Used to render filtered options, you can use slot="showSearchRender" and slot-scope="{inputValue, path}" | `function({inputValue, path}): vNode` | |
