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50 lines
813 B
Markdown
50 lines
813 B
Markdown
# 异步多项（仅叶子节点）
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```html
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<n-cascader
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v-model="value"
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multiple
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placeholder="请选些什么"
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:options="options"
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style="flex-grow: 1; margin-right: 12px;"
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remote
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:on-load="handleLoad"
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/>
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```
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```js
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function genChildren (option) {
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const children = []
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for (let i = 0; i <= option.depth; ++i) {
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children.push({
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label: option.label + '_' + i,
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value: option.label + '_' + i,
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isLeaf: option.depth === 3
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})
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}
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return children
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}
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const options = [
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{
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label: 'Root',
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value: 'root',
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isLeaf: false
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}
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]
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export default {
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data () {
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return {
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value: null,
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options: options
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}
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},
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methods: {
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handleLoad (option, resolve) {
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window.setTimeout(() => {
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resolve(genChildren(option))
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}, 1000)
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}
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}
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}
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```
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