mirror of
https://gitee.com/vant-contrib/vant.git
synced 2025-04-06 03:57:59 +08:00
92 lines
1.9 KiB
Markdown
92 lines
1.9 KiB
Markdown
## TreeSelect
|
|
|
|
### Install
|
|
``` javascript
|
|
import { TreeSelect } from 'vant';
|
|
|
|
Vue.use(TreeSelect);
|
|
```
|
|
|
|
### Usage
|
|
|
|
#### Basic Usage
|
|
|
|
```html
|
|
<van-tree-select
|
|
:items="items"
|
|
:main-active-index="mainActiveIndex"
|
|
:active-id="activeId"
|
|
@navclick="onNavClick"
|
|
@itemclick="onItemClick"
|
|
/>
|
|
```
|
|
|
|
```javascript
|
|
export default {
|
|
data() {
|
|
return {
|
|
items,
|
|
// the index of parent item
|
|
mainActiveIndex: 0,
|
|
// the id of selected item
|
|
activeId: 1001
|
|
};
|
|
},
|
|
methods: {
|
|
onNavClick(index) {
|
|
this.mainActiveIndex = index;
|
|
},
|
|
onItemClick(data) {
|
|
this.activeId = data.id;
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
### API
|
|
|
|
#### API
|
|
|
|
| Attribute | Description | Type | Default |
|
|
|------|------|------|------|
|
|
| items | Required datasets for the component, see Data Structure for detail. | `Array` | `[]` |
|
|
| height | Height (px) | `Number` | `300` |
|
|
| main-Active-index | The index of selected parent node | `Number` | `0` |
|
|
| active-id | Id of selected item | `String | Number` | `0` |
|
|
|
|
#### Event
|
|
|
|
| Event | Description | Arguments |
|
|
|------|------|------|
|
|
| navclick | triggered when parent node is selected | index: index of selected parent |
|
|
| itemclick | triggered when item is selected | data: selected item |
|
|
|
|
### Data Structure
|
|
`items` should be an array contains specified tree objects.
|
|
|
|
In every tree object, `text` property defines `id` stands for the unique key while the `children` contains sub-tree objects.
|
|
|
|
```javascript
|
|
[
|
|
{
|
|
// name of the parent node
|
|
text: 'All Cities',
|
|
// leaves of this parent node
|
|
children: [
|
|
{
|
|
// name of the leaf node
|
|
text: 'Washington',
|
|
// id of the leaf node, component highlights leaf node by comparing the activeId with this.
|
|
id: 1,
|
|
// disable options
|
|
disabled: true
|
|
},
|
|
{
|
|
text: 'Baltimore',
|
|
id: 2
|
|
}
|
|
]
|
|
}
|
|
]
|
|
```
|