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1988 lines
54 KiB
Markdown
1988 lines
54 KiB
Markdown
## Cascader
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If the options have a clear hierarchical structure, Cascader can be used to view and select them.
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### Basic usage
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There are two ways to expand child option items.
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:::demo Assigning the `options` attribute to an array of options renders a Cascader. The `props.expandTrigger` attribute defines how child options are expanded.
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```html
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<div class="block">
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<span class="demonstration">Child options expand when clicked (default)</span>
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<el-cascader
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v-model="value"
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:options="options"
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@change="handleChange"></el-cascader>
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</div>
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<div class="block">
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<span class="demonstration">Child options expand when hovered</span>
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<el-cascader
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v-model="value"
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:options="options"
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:props="{ expandTrigger: 'hover' }"
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@change="handleChange"></el-cascader>
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</div>
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<script>
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export default {
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data() {
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return {
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value: [],
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options: [{
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value: 'guide',
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label: 'Guide',
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children: [{
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value: 'disciplines',
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label: 'Disciplines',
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children: [{
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value: 'consistency',
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label: 'Consistency'
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}, {
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value: 'feedback',
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label: 'Feedback'
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}, {
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value: 'efficiency',
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label: 'Efficiency'
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}, {
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value: 'controllability',
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label: 'Controllability'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'side nav',
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label: 'Side Navigation'
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}, {
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value: 'top nav',
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label: 'Top Navigation'
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}]
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}]
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}, {
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value: 'component',
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label: 'Component',
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children: [{
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value: 'basic',
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label: 'Basic',
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children: [{
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value: 'layout',
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label: 'Layout'
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}, {
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value: 'color',
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label: 'Color'
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}, {
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value: 'typography',
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label: 'Typography'
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}, {
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value: 'icon',
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label: 'Icon'
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}, {
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value: 'button',
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label: 'Button'
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}]
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}, {
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value: 'form',
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label: 'Form',
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children: [{
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value: 'radio',
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label: 'Radio'
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}, {
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value: 'checkbox',
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label: 'Checkbox'
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}, {
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value: 'input',
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label: 'Input'
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}, {
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value: 'input-number',
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label: 'InputNumber'
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}, {
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value: 'select',
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label: 'Select'
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}, {
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value: 'cascader',
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label: 'Cascader'
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}, {
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value: 'switch',
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label: 'Switch'
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}, {
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value: 'slider',
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label: 'Slider'
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}, {
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value: 'time-picker',
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label: 'TimePicker'
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}, {
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value: 'date-picker',
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label: 'DatePicker'
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}, {
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value: 'datetime-picker',
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label: 'DateTimePicker'
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}, {
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value: 'upload',
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label: 'Upload'
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}, {
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value: 'rate',
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label: 'Rate'
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}, {
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value: 'form',
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label: 'Form'
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}]
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}, {
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value: 'data',
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label: 'Data',
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children: [{
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value: 'table',
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label: 'Table'
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}, {
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value: 'tag',
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label: 'Tag'
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}, {
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value: 'progress',
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label: 'Progress'
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}, {
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value: 'tree',
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label: 'Tree'
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}, {
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value: 'pagination',
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label: 'Pagination'
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}, {
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value: 'badge',
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label: 'Badge'
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}]
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}, {
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value: 'notice',
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label: 'Notice',
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children: [{
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value: 'alert',
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label: 'Alert'
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}, {
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value: 'loading',
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label: 'Loading'
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}, {
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value: 'message',
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label: 'Message'
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}, {
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value: 'message-box',
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label: 'MessageBox'
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}, {
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value: 'notification',
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label: 'Notification'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'menu',
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label: 'NavMenu'
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}, {
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value: 'tabs',
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label: 'Tabs'
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}, {
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value: 'breadcrumb',
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label: 'Breadcrumb'
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}, {
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value: 'dropdown',
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label: 'Dropdown'
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}, {
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value: 'steps',
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label: 'Steps'
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}]
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}, {
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value: 'others',
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label: 'Others',
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children: [{
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value: 'dialog',
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label: 'Dialog'
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}, {
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value: 'tooltip',
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label: 'Tooltip'
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}, {
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value: 'popover',
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label: 'Popover'
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}, {
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value: 'card',
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label: 'Card'
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}, {
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value: 'carousel',
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label: 'Carousel'
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}, {
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value: 'collapse',
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label: 'Collapse'
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}]
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}]
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}, {
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value: 'resource',
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label: 'Resource',
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children: [{
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value: 'axure',
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label: 'Axure Components'
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}, {
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value: 'sketch',
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label: 'Sketch Templates'
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}, {
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value: 'docs',
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label: 'Design Documentation'
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}]
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}]
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};
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},
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methods: {
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handleChange(value) {
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console.log(value);
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}
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}
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};
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</script>
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```
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:::
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### Disabled option
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Disable an option by setting a `disabled` field in the option object.
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:::demo In this example, the first item in `options` array has a `disabled: true` field, so it is disabled. By default, Cascader checks the `disabled` field in each option object; if you are using another field name to indicate whether an option is disabled, you can assign it in the `props.disabled` attribute (see the API table below for details). And of course, field name `value`, `label` and `children` can also be customized in the same way.
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```html
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<el-cascader :options="options"></el-cascader>
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<script>
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export default {
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data() {
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return {
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options: [{
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value: 'guide',
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label: 'Guide',
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disabled: true,
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children: [{
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value: 'disciplines',
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label: 'Disciplines',
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children: [{
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value: 'consistency',
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label: 'Consistency'
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}, {
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value: 'feedback',
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label: 'Feedback'
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}, {
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value: 'efficiency',
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label: 'Efficiency'
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}, {
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value: 'controllability',
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label: 'Controllability'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'side nav',
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label: 'Side Navigation'
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}, {
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value: 'top nav',
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label: 'Top Navigation'
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}]
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}]
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}, {
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value: 'component',
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label: 'Component',
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children: [{
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value: 'basic',
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label: 'Basic',
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children: [{
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value: 'layout',
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label: 'Layout'
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}, {
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value: 'color',
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label: 'Color'
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}, {
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value: 'typography',
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label: 'Typography'
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}, {
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value: 'icon',
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label: 'Icon'
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}, {
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value: 'button',
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label: 'Button'
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}]
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}, {
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value: 'form',
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label: 'Form',
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children: [{
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value: 'radio',
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label: 'Radio'
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}, {
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value: 'checkbox',
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label: 'Checkbox'
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}, {
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value: 'input',
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label: 'Input'
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}, {
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value: 'input-number',
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label: 'InputNumber'
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}, {
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value: 'select',
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label: 'Select'
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}, {
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value: 'cascader',
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label: 'Cascader'
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}, {
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value: 'switch',
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label: 'Switch'
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}, {
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value: 'slider',
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label: 'Slider'
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}, {
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value: 'time-picker',
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label: 'TimePicker'
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}, {
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value: 'date-picker',
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label: 'DatePicker'
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}, {
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value: 'datetime-picker',
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label: 'DateTimePicker'
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}, {
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value: 'upload',
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label: 'Upload'
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}, {
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value: 'rate',
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label: 'Rate'
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}, {
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value: 'form',
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label: 'Form'
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}]
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}, {
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value: 'data',
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label: 'Data',
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children: [{
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value: 'table',
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label: 'Table'
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}, {
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value: 'tag',
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label: 'Tag'
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}, {
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value: 'progress',
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label: 'Progress'
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}, {
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value: 'tree',
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label: 'Tree'
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}, {
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value: 'pagination',
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label: 'Pagination'
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}, {
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value: 'badge',
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label: 'Badge'
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}]
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}, {
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value: 'notice',
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label: 'Notice',
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children: [{
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value: 'alert',
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label: 'Alert'
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}, {
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value: 'loading',
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label: 'Loading'
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}, {
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value: 'message',
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label: 'Message'
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}, {
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value: 'message-box',
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label: 'MessageBox'
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}, {
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value: 'notification',
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label: 'Notification'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'menu',
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label: 'NavMenu'
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}, {
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value: 'tabs',
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label: 'Tabs'
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}, {
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value: 'breadcrumb',
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label: 'Breadcrumb'
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}, {
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value: 'dropdown',
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label: 'Dropdown'
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}, {
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value: 'steps',
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label: 'Steps'
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}]
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}, {
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value: 'others',
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label: 'Others',
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children: [{
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value: 'dialog',
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label: 'Dialog'
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}, {
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value: 'tooltip',
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label: 'Tooltip'
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}, {
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value: 'popover',
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label: 'Popover'
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}, {
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value: 'card',
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label: 'Card'
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}, {
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value: 'carousel',
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label: 'Carousel'
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}, {
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value: 'collapse',
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label: 'Collapse'
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}]
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}]
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}, {
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value: 'resource',
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label: 'Resource',
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children: [{
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value: 'axure',
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label: 'Axure Components'
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}, {
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value: 'sketch',
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label: 'Sketch Templates'
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}, {
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value: 'docs',
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label: 'Design Documentation'
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}]
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}]
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};
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}
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};
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</script>
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```
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:::
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### Clearable
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Set `clearable` attribute for `el-cascader` and a clear icon will appear when selected and hovered
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:::demo
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```html
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<el-cascader :options="options" clearable></el-cascader>
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<script>
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export default {
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data() {
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return {
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options: [{
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value: 'guide',
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label: 'Guide',
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children: [{
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value: 'disciplines',
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label: 'Disciplines',
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children: [{
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value: 'consistency',
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label: 'Consistency'
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}, {
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value: 'feedback',
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label: 'Feedback'
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}, {
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value: 'efficiency',
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label: 'Efficiency'
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}, {
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value: 'controllability',
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label: 'Controllability'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'side nav',
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label: 'Side Navigation'
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}, {
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value: 'top nav',
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label: 'Top Navigation'
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}]
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}]
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}, {
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value: 'component',
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label: 'Component',
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children: [{
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value: 'basic',
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label: 'Basic',
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children: [{
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value: 'layout',
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label: 'Layout'
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}, {
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value: 'color',
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label: 'Color'
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}, {
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value: 'typography',
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label: 'Typography'
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}, {
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value: 'icon',
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label: 'Icon'
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}, {
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value: 'button',
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label: 'Button'
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}]
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}, {
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value: 'form',
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label: 'Form',
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children: [{
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value: 'radio',
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label: 'Radio'
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}, {
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value: 'checkbox',
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label: 'Checkbox'
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}, {
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value: 'input',
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label: 'Input'
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}, {
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value: 'input-number',
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label: 'InputNumber'
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}, {
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value: 'select',
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label: 'Select'
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}, {
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value: 'cascader',
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label: 'Cascader'
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}, {
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value: 'switch',
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label: 'Switch'
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}, {
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value: 'slider',
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label: 'Slider'
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}, {
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value: 'time-picker',
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label: 'TimePicker'
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}, {
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value: 'date-picker',
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label: 'DatePicker'
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}, {
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value: 'datetime-picker',
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label: 'DateTimePicker'
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}, {
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value: 'upload',
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label: 'Upload'
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}, {
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value: 'rate',
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label: 'Rate'
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}, {
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value: 'form',
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label: 'Form'
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}]
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}, {
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value: 'data',
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label: 'Data',
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children: [{
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value: 'table',
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label: 'Table'
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}, {
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value: 'tag',
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label: 'Tag'
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}, {
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value: 'progress',
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label: 'Progress'
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}, {
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value: 'tree',
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label: 'Tree'
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}, {
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value: 'pagination',
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label: 'Pagination'
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}, {
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value: 'badge',
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label: 'Badge'
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}]
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}, {
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value: 'notice',
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label: 'Notice',
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children: [{
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value: 'alert',
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label: 'Alert'
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}, {
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value: 'loading',
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label: 'Loading'
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}, {
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value: 'message',
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label: 'Message'
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}, {
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value: 'message-box',
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label: 'MessageBox'
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}, {
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value: 'notification',
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label: 'Notification'
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}]
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}, {
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value: 'navigation',
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label: 'Navigation',
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children: [{
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value: 'menu',
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label: 'NavMenu'
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}, {
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value: 'tabs',
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label: 'Tabs'
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}, {
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value: 'breadcrumb',
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label: 'Breadcrumb'
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}, {
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value: 'dropdown',
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label: 'Dropdown'
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}, {
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value: 'steps',
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label: 'Steps'
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}]
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}, {
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value: 'others',
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label: 'Others',
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children: [{
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value: 'dialog',
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label: 'Dialog'
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}, {
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value: 'tooltip',
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label: 'Tooltip'
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}, {
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value: 'popover',
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label: 'Popover'
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}, {
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value: 'card',
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label: 'Card'
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}, {
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value: 'carousel',
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label: 'Carousel'
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}, {
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value: 'collapse',
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label: 'Collapse'
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}]
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}]
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}, {
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value: 'resource',
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label: 'Resource',
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children: [{
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value: 'axure',
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label: 'Axure Components'
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}, {
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||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
}
|
||
}
|
||
}
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Display only the last level
|
||
|
||
The input can display only the last level instead of all levels.
|
||
|
||
:::demo The `show-all-levels` attribute defines if all levels are displayed. If it is `false`, only the last level is displayed.
|
||
```html
|
||
<el-cascader :options="options" :show-all-levels="false"></el-cascader>
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
options: [{
|
||
value: 'guide',
|
||
label: 'Guide',
|
||
children: [{
|
||
value: 'disciplines',
|
||
label: 'Disciplines',
|
||
children: [{
|
||
value: 'consistency',
|
||
label: 'Consistency'
|
||
}, {
|
||
value: 'feedback',
|
||
label: 'Feedback'
|
||
}, {
|
||
value: 'efficiency',
|
||
label: 'Efficiency'
|
||
}, {
|
||
value: 'controllability',
|
||
label: 'Controllability'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'side nav',
|
||
label: 'Side Navigation'
|
||
}, {
|
||
value: 'top nav',
|
||
label: 'Top Navigation'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'component',
|
||
label: 'Component',
|
||
children: [{
|
||
value: 'basic',
|
||
label: 'Basic',
|
||
children: [{
|
||
value: 'layout',
|
||
label: 'Layout'
|
||
}, {
|
||
value: 'color',
|
||
label: 'Color'
|
||
}, {
|
||
value: 'typography',
|
||
label: 'Typography'
|
||
}, {
|
||
value: 'icon',
|
||
label: 'Icon'
|
||
}, {
|
||
value: 'button',
|
||
label: 'Button'
|
||
}]
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form',
|
||
children: [{
|
||
value: 'radio',
|
||
label: 'Radio'
|
||
}, {
|
||
value: 'checkbox',
|
||
label: 'Checkbox'
|
||
}, {
|
||
value: 'input',
|
||
label: 'Input'
|
||
}, {
|
||
value: 'input-number',
|
||
label: 'InputNumber'
|
||
}, {
|
||
value: 'select',
|
||
label: 'Select'
|
||
}, {
|
||
value: 'cascader',
|
||
label: 'Cascader'
|
||
}, {
|
||
value: 'switch',
|
||
label: 'Switch'
|
||
}, {
|
||
value: 'slider',
|
||
label: 'Slider'
|
||
}, {
|
||
value: 'time-picker',
|
||
label: 'TimePicker'
|
||
}, {
|
||
value: 'date-picker',
|
||
label: 'DatePicker'
|
||
}, {
|
||
value: 'datetime-picker',
|
||
label: 'DateTimePicker'
|
||
}, {
|
||
value: 'upload',
|
||
label: 'Upload'
|
||
}, {
|
||
value: 'rate',
|
||
label: 'Rate'
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form'
|
||
}]
|
||
}, {
|
||
value: 'data',
|
||
label: 'Data',
|
||
children: [{
|
||
value: 'table',
|
||
label: 'Table'
|
||
}, {
|
||
value: 'tag',
|
||
label: 'Tag'
|
||
}, {
|
||
value: 'progress',
|
||
label: 'Progress'
|
||
}, {
|
||
value: 'tree',
|
||
label: 'Tree'
|
||
}, {
|
||
value: 'pagination',
|
||
label: 'Pagination'
|
||
}, {
|
||
value: 'badge',
|
||
label: 'Badge'
|
||
}]
|
||
}, {
|
||
value: 'notice',
|
||
label: 'Notice',
|
||
children: [{
|
||
value: 'alert',
|
||
label: 'Alert'
|
||
}, {
|
||
value: 'loading',
|
||
label: 'Loading'
|
||
}, {
|
||
value: 'message',
|
||
label: 'Message'
|
||
}, {
|
||
value: 'message-box',
|
||
label: 'MessageBox'
|
||
}, {
|
||
value: 'notification',
|
||
label: 'Notification'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'menu',
|
||
label: 'NavMenu'
|
||
}, {
|
||
value: 'tabs',
|
||
label: 'Tabs'
|
||
}, {
|
||
value: 'breadcrumb',
|
||
label: 'Breadcrumb'
|
||
}, {
|
||
value: 'dropdown',
|
||
label: 'Dropdown'
|
||
}, {
|
||
value: 'steps',
|
||
label: 'Steps'
|
||
}]
|
||
}, {
|
||
value: 'others',
|
||
label: 'Others',
|
||
children: [{
|
||
value: 'dialog',
|
||
label: 'Dialog'
|
||
}, {
|
||
value: 'tooltip',
|
||
label: 'Tooltip'
|
||
}, {
|
||
value: 'popover',
|
||
label: 'Popover'
|
||
}, {
|
||
value: 'card',
|
||
label: 'Card'
|
||
}, {
|
||
value: 'carousel',
|
||
label: 'Carousel'
|
||
}, {
|
||
value: 'collapse',
|
||
label: 'Collapse'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'resource',
|
||
label: 'Resource',
|
||
children: [{
|
||
value: 'axure',
|
||
label: 'Axure Components'
|
||
}, {
|
||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Multiple Selection
|
||
|
||
Set `props.multiple = true` to use multiple selection.
|
||
|
||
:::demo When using multiple selection, all selected tags will display by default, You can set `collapse-tags = true` to fold selected tags.
|
||
```html
|
||
<div class="block">
|
||
<span class="demonstration">Display all tags (default)</span>
|
||
<el-cascader
|
||
:options="options"
|
||
:props="props"
|
||
clearable></el-cascader>
|
||
</div>
|
||
<div class="block">
|
||
<span class="demonstration">Collapse tags</span>
|
||
<el-cascader
|
||
:options="options"
|
||
:props="props"
|
||
collapse-tags
|
||
clearable></el-cascader>
|
||
</div>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
props: { multiple: true },
|
||
options: [{
|
||
value: 1,
|
||
label: 'Asia',
|
||
children: [{
|
||
value: 2,
|
||
label: 'China',
|
||
children: [
|
||
{ value: 3, label: 'Beijing' },
|
||
{ value: 4, label: 'Shanghai' },
|
||
{ value: 5, label: 'Hangzhou' }
|
||
]
|
||
}, {
|
||
value: 6,
|
||
label: 'Japan',
|
||
children: [
|
||
{ value: 7, label: 'Tokyo' },
|
||
{ value: 8, label: 'Osaka' },
|
||
{ value: 9, label: 'Kyoto' }
|
||
]
|
||
}, {
|
||
value: 10,
|
||
label: 'Korea',
|
||
children: [
|
||
{ value: 11, label: 'Seoul' },
|
||
{ value: 12, label: 'Busan' },
|
||
{ value: 13, label: 'Taegu' }
|
||
]
|
||
}]
|
||
}, {
|
||
value: 14,
|
||
label: 'Europe',
|
||
children: [{
|
||
value: 15,
|
||
label: 'France',
|
||
children: [
|
||
{ value: 16, label: 'Paris' },
|
||
{ value: 17, label: 'Marseille' },
|
||
{ value: 18, label: 'Lyon' }
|
||
]
|
||
}, {
|
||
value: 19,
|
||
label: 'UK',
|
||
children: [
|
||
{ value: 20, label: 'London' },
|
||
{ value: 21, label: 'Birmingham' },
|
||
{ value: 22, label: 'Manchester' }
|
||
]
|
||
}]
|
||
}, {
|
||
value: 23,
|
||
label: 'North America',
|
||
children: [{
|
||
value: 24,
|
||
label: 'US',
|
||
children: [
|
||
{ value: 25, label: 'New York' },
|
||
{ value: 26, label: 'Los Angeles' },
|
||
{ value: 27, label: 'Washington' }
|
||
]
|
||
}, {
|
||
value: 28,
|
||
label: 'Canada',
|
||
children: [
|
||
{ value: 29, label: 'Toronto' },
|
||
{ value: 30, label: 'Montreal' },
|
||
{ value: 31, label: 'Ottawa' }
|
||
]
|
||
}]
|
||
}]
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
|
||
### Select any level of options
|
||
|
||
In single selection, only the leaf nodes can be checked, and in multiple selection, check parent nodes will lead to leaf nodes be checked eventually. When enable this feature, it can make parent and child nodes unlinked and you can select any level of options.
|
||
|
||
:::demo Set `props.checkStrictly = true` to make checked state of a node not affects its parent nodes and child nodes, and then you can select any level of options.
|
||
```html
|
||
<div class="block">
|
||
<span class="demonstration">Select any level of options (Single selection)</span>
|
||
<el-cascader
|
||
:options="options"
|
||
:props="{ checkStrictly: true }"
|
||
clearable></el-cascader>
|
||
</div>
|
||
<div class="block">
|
||
<span class="demonstration">Select any level of options (Multiple selection)</span>
|
||
<el-cascader
|
||
:options="options"
|
||
:props="{ multiple: true, checkStrictly: true }"
|
||
clearable></el-cascader>
|
||
</div>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
options: [{
|
||
value: 'guide',
|
||
label: 'Guide',
|
||
children: [{
|
||
value: 'disciplines',
|
||
label: 'Disciplines',
|
||
children: [{
|
||
value: 'consistency',
|
||
label: 'Consistency'
|
||
}, {
|
||
value: 'feedback',
|
||
label: 'Feedback'
|
||
}, {
|
||
value: 'efficiency',
|
||
label: 'Efficiency'
|
||
}, {
|
||
value: 'controllability',
|
||
label: 'Controllability'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'side nav',
|
||
label: 'Side Navigation'
|
||
}, {
|
||
value: 'top nav',
|
||
label: 'Top Navigation'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'component',
|
||
label: 'Component',
|
||
children: [{
|
||
value: 'basic',
|
||
label: 'Basic',
|
||
children: [{
|
||
value: 'layout',
|
||
label: 'Layout'
|
||
}, {
|
||
value: 'color',
|
||
label: 'Color'
|
||
}, {
|
||
value: 'typography',
|
||
label: 'Typography'
|
||
}, {
|
||
value: 'icon',
|
||
label: 'Icon'
|
||
}, {
|
||
value: 'button',
|
||
label: 'Button'
|
||
}]
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form',
|
||
children: [{
|
||
value: 'radio',
|
||
label: 'Radio'
|
||
}, {
|
||
value: 'checkbox',
|
||
label: 'Checkbox'
|
||
}, {
|
||
value: 'input',
|
||
label: 'Input'
|
||
}, {
|
||
value: 'input-number',
|
||
label: 'InputNumber'
|
||
}, {
|
||
value: 'select',
|
||
label: 'Select'
|
||
}, {
|
||
value: 'cascader',
|
||
label: 'Cascader'
|
||
}, {
|
||
value: 'switch',
|
||
label: 'Switch'
|
||
}, {
|
||
value: 'slider',
|
||
label: 'Slider'
|
||
}, {
|
||
value: 'time-picker',
|
||
label: 'TimePicker'
|
||
}, {
|
||
value: 'date-picker',
|
||
label: 'DatePicker'
|
||
}, {
|
||
value: 'datetime-picker',
|
||
label: 'DateTimePicker'
|
||
}, {
|
||
value: 'upload',
|
||
label: 'Upload'
|
||
}, {
|
||
value: 'rate',
|
||
label: 'Rate'
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form'
|
||
}]
|
||
}, {
|
||
value: 'data',
|
||
label: 'Data',
|
||
children: [{
|
||
value: 'table',
|
||
label: 'Table'
|
||
}, {
|
||
value: 'tag',
|
||
label: 'Tag'
|
||
}, {
|
||
value: 'progress',
|
||
label: 'Progress'
|
||
}, {
|
||
value: 'tree',
|
||
label: 'Tree'
|
||
}, {
|
||
value: 'pagination',
|
||
label: 'Pagination'
|
||
}, {
|
||
value: 'badge',
|
||
label: 'Badge'
|
||
}]
|
||
}, {
|
||
value: 'notice',
|
||
label: 'Notice',
|
||
children: [{
|
||
value: 'alert',
|
||
label: 'Alert'
|
||
}, {
|
||
value: 'loading',
|
||
label: 'Loading'
|
||
}, {
|
||
value: 'message',
|
||
label: 'Message'
|
||
}, {
|
||
value: 'message-box',
|
||
label: 'MessageBox'
|
||
}, {
|
||
value: 'notification',
|
||
label: 'Notification'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'menu',
|
||
label: 'NavMenu'
|
||
}, {
|
||
value: 'tabs',
|
||
label: 'Tabs'
|
||
}, {
|
||
value: 'breadcrumb',
|
||
label: 'Breadcrumb'
|
||
}, {
|
||
value: 'dropdown',
|
||
label: 'Dropdown'
|
||
}, {
|
||
value: 'steps',
|
||
label: 'Steps'
|
||
}]
|
||
}, {
|
||
value: 'others',
|
||
label: 'Others',
|
||
children: [{
|
||
value: 'dialog',
|
||
label: 'Dialog'
|
||
}, {
|
||
value: 'tooltip',
|
||
label: 'Tooltip'
|
||
}, {
|
||
value: 'popover',
|
||
label: 'Popover'
|
||
}, {
|
||
value: 'card',
|
||
label: 'Card'
|
||
}, {
|
||
value: 'carousel',
|
||
label: 'Carousel'
|
||
}, {
|
||
value: 'collapse',
|
||
label: 'Collapse'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'resource',
|
||
label: 'Resource',
|
||
children: [{
|
||
value: 'axure',
|
||
label: 'Axure Components'
|
||
}, {
|
||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Dynamic loading
|
||
|
||
Dynamic load its child nodes when checked a node.
|
||
|
||
:::demo Set `lazy = true` to use dynamic loading, and you have to specify how to load the data source by `lazyload`. There are two parameters of `lazyload`,the first parameter `node` is the node currently clicked, and the `resolve` is a callback that indicate loading is finished which must invoke. To display the status of node more accurately, you can add a `leaf` field (can be modified by `props.leaf`) to indicate whether it is a leaf node. Otherwise, it will be inferred by if has any child nodes.
|
||
```html
|
||
<el-cascader :props="props"></el-cascader>
|
||
|
||
<script>
|
||
let id = 0;
|
||
|
||
export default {
|
||
data() {
|
||
return {
|
||
props: {
|
||
lazy: true,
|
||
lazyLoad (node, resolve) {
|
||
const { level } = node;
|
||
setTimeout(() => {
|
||
const nodes = Array.from({ length: level + 1 })
|
||
.map(item => ({
|
||
value: ++id,
|
||
label: `Option - ${id}`,
|
||
leaf: level >= 2
|
||
}));
|
||
// Invoke `resolve` callback to return the child nodes data and indicate the loading is finished.
|
||
resolve(nodes);
|
||
}, 1000);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Filterable
|
||
|
||
Search and select options with a keyword.
|
||
|
||
:::demo Adding `filterable` to `el-cascader` enables filtering. Cascader will match nodes whose label or parent's label (according to `show-all-levels`) includes input keyword. Of course, you can customize search logic by `filter-method` which accepts a function, the first parameter is `node`, the second is `keyword`, and need return a boolean value indicating whether it hits.
|
||
```html
|
||
<div class="block">
|
||
<span class="demonstration">Filterable (Single selection)</span>
|
||
<el-cascader
|
||
placeholder="Try searchingL Guide"
|
||
:options="options"
|
||
filterable></el-cascader>
|
||
</div>
|
||
<div class="block">
|
||
<span class="demonstration">Filterable (Multiple selection)</span>
|
||
<el-cascader
|
||
placeholder="Try searchingL Guide"
|
||
:options="options"
|
||
:props="{ multiple: true }"
|
||
filterable></el-cascader>
|
||
</div>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
options: [{
|
||
value: 'guide',
|
||
label: 'Guide',
|
||
children: [{
|
||
value: 'disciplines',
|
||
label: 'Disciplines',
|
||
children: [{
|
||
value: 'consistency',
|
||
label: 'Consistency'
|
||
}, {
|
||
value: 'feedback',
|
||
label: 'Feedback'
|
||
}, {
|
||
value: 'efficiency',
|
||
label: 'Efficiency'
|
||
}, {
|
||
value: 'controllability',
|
||
label: 'Controllability'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'side nav',
|
||
label: 'Side Navigation'
|
||
}, {
|
||
value: 'top nav',
|
||
label: 'Top Navigation'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'component',
|
||
label: 'Component',
|
||
children: [{
|
||
value: 'basic',
|
||
label: 'Basic',
|
||
children: [{
|
||
value: 'layout',
|
||
label: 'Layout'
|
||
}, {
|
||
value: 'color',
|
||
label: 'Color'
|
||
}, {
|
||
value: 'typography',
|
||
label: 'Typography'
|
||
}, {
|
||
value: 'icon',
|
||
label: 'Icon'
|
||
}, {
|
||
value: 'button',
|
||
label: 'Button'
|
||
}]
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form',
|
||
children: [{
|
||
value: 'radio',
|
||
label: 'Radio'
|
||
}, {
|
||
value: 'checkbox',
|
||
label: 'Checkbox'
|
||
}, {
|
||
value: 'input',
|
||
label: 'Input'
|
||
}, {
|
||
value: 'input-number',
|
||
label: 'InputNumber'
|
||
}, {
|
||
value: 'select',
|
||
label: 'Select'
|
||
}, {
|
||
value: 'cascader',
|
||
label: 'Cascader'
|
||
}, {
|
||
value: 'switch',
|
||
label: 'Switch'
|
||
}, {
|
||
value: 'slider',
|
||
label: 'Slider'
|
||
}, {
|
||
value: 'time-picker',
|
||
label: 'TimePicker'
|
||
}, {
|
||
value: 'date-picker',
|
||
label: 'DatePicker'
|
||
}, {
|
||
value: 'datetime-picker',
|
||
label: 'DateTimePicker'
|
||
}, {
|
||
value: 'upload',
|
||
label: 'Upload'
|
||
}, {
|
||
value: 'rate',
|
||
label: 'Rate'
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form'
|
||
}]
|
||
}, {
|
||
value: 'data',
|
||
label: 'Data',
|
||
children: [{
|
||
value: 'table',
|
||
label: 'Table'
|
||
}, {
|
||
value: 'tag',
|
||
label: 'Tag'
|
||
}, {
|
||
value: 'progress',
|
||
label: 'Progress'
|
||
}, {
|
||
value: 'tree',
|
||
label: 'Tree'
|
||
}, {
|
||
value: 'pagination',
|
||
label: 'Pagination'
|
||
}, {
|
||
value: 'badge',
|
||
label: 'Badge'
|
||
}]
|
||
}, {
|
||
value: 'notice',
|
||
label: 'Notice',
|
||
children: [{
|
||
value: 'alert',
|
||
label: 'Alert'
|
||
}, {
|
||
value: 'loading',
|
||
label: 'Loading'
|
||
}, {
|
||
value: 'message',
|
||
label: 'Message'
|
||
}, {
|
||
value: 'message-box',
|
||
label: 'MessageBox'
|
||
}, {
|
||
value: 'notification',
|
||
label: 'Notification'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'menu',
|
||
label: 'NavMenu'
|
||
}, {
|
||
value: 'tabs',
|
||
label: 'Tabs'
|
||
}, {
|
||
value: 'breadcrumb',
|
||
label: 'Breadcrumb'
|
||
}, {
|
||
value: 'dropdown',
|
||
label: 'Dropdown'
|
||
}, {
|
||
value: 'steps',
|
||
label: 'Steps'
|
||
}]
|
||
}, {
|
||
value: 'others',
|
||
label: 'Others',
|
||
children: [{
|
||
value: 'dialog',
|
||
label: 'Dialog'
|
||
}, {
|
||
value: 'tooltip',
|
||
label: 'Tooltip'
|
||
}, {
|
||
value: 'popover',
|
||
label: 'Popover'
|
||
}, {
|
||
value: 'card',
|
||
label: 'Card'
|
||
}, {
|
||
value: 'carousel',
|
||
label: 'Carousel'
|
||
}, {
|
||
value: 'collapse',
|
||
label: 'Collapse'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'resource',
|
||
label: 'Resource',
|
||
children: [{
|
||
value: 'axure',
|
||
label: 'Axure Components'
|
||
}, {
|
||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Custom option content
|
||
|
||
You can customize the content of cascader node.
|
||
|
||
:::demo You can customize the content of cascader node by `scoped slot`. You'll have access to `node` and `data` in the scope, standing for the Node object and node data of the current node respectively。
|
||
```html
|
||
<el-cascader :options="options">
|
||
<template #default="{ node, data }">
|
||
<span>{{ data.label }}</span>
|
||
<span v-if="!node.isLeaf"> ({{ data.children.length }}) </span>
|
||
</template>
|
||
</el-cascader>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
options: [{
|
||
value: 'guide',
|
||
label: 'Guide',
|
||
children: [{
|
||
value: 'disciplines',
|
||
label: 'Disciplines',
|
||
children: [{
|
||
value: 'consistency',
|
||
label: 'Consistency'
|
||
}, {
|
||
value: 'feedback',
|
||
label: 'Feedback'
|
||
}, {
|
||
value: 'efficiency',
|
||
label: 'Efficiency'
|
||
}, {
|
||
value: 'controllability',
|
||
label: 'Controllability'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'side nav',
|
||
label: 'Side Navigation'
|
||
}, {
|
||
value: 'top nav',
|
||
label: 'Top Navigation'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'component',
|
||
label: 'Component',
|
||
children: [{
|
||
value: 'basic',
|
||
label: 'Basic',
|
||
children: [{
|
||
value: 'layout',
|
||
label: 'Layout'
|
||
}, {
|
||
value: 'color',
|
||
label: 'Color'
|
||
}, {
|
||
value: 'typography',
|
||
label: 'Typography'
|
||
}, {
|
||
value: 'icon',
|
||
label: 'Icon'
|
||
}, {
|
||
value: 'button',
|
||
label: 'Button'
|
||
}]
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form',
|
||
children: [{
|
||
value: 'radio',
|
||
label: 'Radio'
|
||
}, {
|
||
value: 'checkbox',
|
||
label: 'Checkbox'
|
||
}, {
|
||
value: 'input',
|
||
label: 'Input'
|
||
}, {
|
||
value: 'input-number',
|
||
label: 'InputNumber'
|
||
}, {
|
||
value: 'select',
|
||
label: 'Select'
|
||
}, {
|
||
value: 'cascader',
|
||
label: 'Cascader'
|
||
}, {
|
||
value: 'switch',
|
||
label: 'Switch'
|
||
}, {
|
||
value: 'slider',
|
||
label: 'Slider'
|
||
}, {
|
||
value: 'time-picker',
|
||
label: 'TimePicker'
|
||
}, {
|
||
value: 'date-picker',
|
||
label: 'DatePicker'
|
||
}, {
|
||
value: 'datetime-picker',
|
||
label: 'DateTimePicker'
|
||
}, {
|
||
value: 'upload',
|
||
label: 'Upload'
|
||
}, {
|
||
value: 'rate',
|
||
label: 'Rate'
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form'
|
||
}]
|
||
}, {
|
||
value: 'data',
|
||
label: 'Data',
|
||
children: [{
|
||
value: 'table',
|
||
label: 'Table'
|
||
}, {
|
||
value: 'tag',
|
||
label: 'Tag'
|
||
}, {
|
||
value: 'progress',
|
||
label: 'Progress'
|
||
}, {
|
||
value: 'tree',
|
||
label: 'Tree'
|
||
}, {
|
||
value: 'pagination',
|
||
label: 'Pagination'
|
||
}, {
|
||
value: 'badge',
|
||
label: 'Badge'
|
||
}]
|
||
}, {
|
||
value: 'notice',
|
||
label: 'Notice',
|
||
children: [{
|
||
value: 'alert',
|
||
label: 'Alert'
|
||
}, {
|
||
value: 'loading',
|
||
label: 'Loading'
|
||
}, {
|
||
value: 'message',
|
||
label: 'Message'
|
||
}, {
|
||
value: 'message-box',
|
||
label: 'MessageBox'
|
||
}, {
|
||
value: 'notification',
|
||
label: 'Notification'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'menu',
|
||
label: 'NavMenu'
|
||
}, {
|
||
value: 'tabs',
|
||
label: 'Tabs'
|
||
}, {
|
||
value: 'breadcrumb',
|
||
label: 'Breadcrumb'
|
||
}, {
|
||
value: 'dropdown',
|
||
label: 'Dropdown'
|
||
}, {
|
||
value: 'steps',
|
||
label: 'Steps'
|
||
}]
|
||
}, {
|
||
value: 'others',
|
||
label: 'Others',
|
||
children: [{
|
||
value: 'dialog',
|
||
label: 'Dialog'
|
||
}, {
|
||
value: 'tooltip',
|
||
label: 'Tooltip'
|
||
}, {
|
||
value: 'popover',
|
||
label: 'Popover'
|
||
}, {
|
||
value: 'card',
|
||
label: 'Card'
|
||
}, {
|
||
value: 'carousel',
|
||
label: 'Carousel'
|
||
}, {
|
||
value: 'collapse',
|
||
label: 'Collapse'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'resource',
|
||
label: 'Resource',
|
||
children: [{
|
||
value: 'axure',
|
||
label: 'Axure Components'
|
||
}, {
|
||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
}
|
||
}
|
||
}
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Cascader panel
|
||
|
||
`CascaderPanel` is the core component of `Cascader` which has various of features such as single selection, multiple selection, dynamic loading and so on.
|
||
|
||
:::demo Just like `el-cascader`, you can set alternative options by `options`, and enable other features by `props`, see the API form below for details.
|
||
```html
|
||
<el-cascader-panel :options="options"></el-cascader-panel>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
options: [{
|
||
value: 'guide',
|
||
label: 'Guide',
|
||
children: [{
|
||
value: 'disciplines',
|
||
label: 'Disciplines',
|
||
children: [{
|
||
value: 'consistency',
|
||
label: 'Consistency'
|
||
}, {
|
||
value: 'feedback',
|
||
label: 'Feedback'
|
||
}, {
|
||
value: 'efficiency',
|
||
label: 'Efficiency'
|
||
}, {
|
||
value: 'controllability',
|
||
label: 'Controllability'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'side nav',
|
||
label: 'Side Navigation'
|
||
}, {
|
||
value: 'top nav',
|
||
label: 'Top Navigation'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'component',
|
||
label: 'Component',
|
||
children: [{
|
||
value: 'basic',
|
||
label: 'Basic',
|
||
children: [{
|
||
value: 'layout',
|
||
label: 'Layout'
|
||
}, {
|
||
value: 'color',
|
||
label: 'Color'
|
||
}, {
|
||
value: 'typography',
|
||
label: 'Typography'
|
||
}, {
|
||
value: 'icon',
|
||
label: 'Icon'
|
||
}, {
|
||
value: 'button',
|
||
label: 'Button'
|
||
}]
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form',
|
||
children: [{
|
||
value: 'radio',
|
||
label: 'Radio'
|
||
}, {
|
||
value: 'checkbox',
|
||
label: 'Checkbox'
|
||
}, {
|
||
value: 'input',
|
||
label: 'Input'
|
||
}, {
|
||
value: 'input-number',
|
||
label: 'InputNumber'
|
||
}, {
|
||
value: 'select',
|
||
label: 'Select'
|
||
}, {
|
||
value: 'cascader',
|
||
label: 'Cascader'
|
||
}, {
|
||
value: 'switch',
|
||
label: 'Switch'
|
||
}, {
|
||
value: 'slider',
|
||
label: 'Slider'
|
||
}, {
|
||
value: 'time-picker',
|
||
label: 'TimePicker'
|
||
}, {
|
||
value: 'date-picker',
|
||
label: 'DatePicker'
|
||
}, {
|
||
value: 'datetime-picker',
|
||
label: 'DateTimePicker'
|
||
}, {
|
||
value: 'upload',
|
||
label: 'Upload'
|
||
}, {
|
||
value: 'rate',
|
||
label: 'Rate'
|
||
}, {
|
||
value: 'form',
|
||
label: 'Form'
|
||
}]
|
||
}, {
|
||
value: 'data',
|
||
label: 'Data',
|
||
children: [{
|
||
value: 'table',
|
||
label: 'Table'
|
||
}, {
|
||
value: 'tag',
|
||
label: 'Tag'
|
||
}, {
|
||
value: 'progress',
|
||
label: 'Progress'
|
||
}, {
|
||
value: 'tree',
|
||
label: 'Tree'
|
||
}, {
|
||
value: 'pagination',
|
||
label: 'Pagination'
|
||
}, {
|
||
value: 'badge',
|
||
label: 'Badge'
|
||
}]
|
||
}, {
|
||
value: 'notice',
|
||
label: 'Notice',
|
||
children: [{
|
||
value: 'alert',
|
||
label: 'Alert'
|
||
}, {
|
||
value: 'loading',
|
||
label: 'Loading'
|
||
}, {
|
||
value: 'message',
|
||
label: 'Message'
|
||
}, {
|
||
value: 'message-box',
|
||
label: 'MessageBox'
|
||
}, {
|
||
value: 'notification',
|
||
label: 'Notification'
|
||
}]
|
||
}, {
|
||
value: 'navigation',
|
||
label: 'Navigation',
|
||
children: [{
|
||
value: 'menu',
|
||
label: 'NavMenu'
|
||
}, {
|
||
value: 'tabs',
|
||
label: 'Tabs'
|
||
}, {
|
||
value: 'breadcrumb',
|
||
label: 'Breadcrumb'
|
||
}, {
|
||
value: 'dropdown',
|
||
label: 'Dropdown'
|
||
}, {
|
||
value: 'steps',
|
||
label: 'Steps'
|
||
}]
|
||
}, {
|
||
value: 'others',
|
||
label: 'Others',
|
||
children: [{
|
||
value: 'dialog',
|
||
label: 'Dialog'
|
||
}, {
|
||
value: 'tooltip',
|
||
label: 'Tooltip'
|
||
}, {
|
||
value: 'popover',
|
||
label: 'Popover'
|
||
}, {
|
||
value: 'card',
|
||
label: 'Card'
|
||
}, {
|
||
value: 'carousel',
|
||
label: 'Carousel'
|
||
}, {
|
||
value: 'collapse',
|
||
label: 'Collapse'
|
||
}]
|
||
}]
|
||
}, {
|
||
value: 'resource',
|
||
label: 'Resource',
|
||
children: [{
|
||
value: 'axure',
|
||
label: 'Axure Components'
|
||
}, {
|
||
value: 'sketch',
|
||
label: 'Sketch Templates'
|
||
}, {
|
||
value: 'docs',
|
||
label: 'Design Documentation'
|
||
}]
|
||
}]
|
||
};
|
||
}
|
||
};
|
||
</script>
|
||
```
|
||
:::
|
||
|
||
### Cascader Attributes
|
||
| Attribute | Description | Type | Accepted Values | Default |
|
||
|---------- |-------- |---------- |------------- |-------- |
|
||
| model-value / v-model | binding value | - | — | — |
|
||
| options | data of the options，the key of `value` and `label` can be customize by `Props`.| array | — | — |
|
||
| props | configuration options, see the following table. | object | — | — |
|
||
| size | size of input | string | medium / small / mini | — |
|
||
| placeholder | placeholder of input | string | — | Select |
|
||
| disabled | whether Cascader is disabled | boolean | — | false |
|
||
| clearable | whether selected value can be cleared | boolean | — | false |
|
||
| show-all-levels | whether to display all levels of the selected value in the input | boolean | — | true |
|
||
| collapse-tags | whether to collapse tags in multiple selection mode | boolean | - | false |
|
||
| separator | option label separator | string | — | ' / ' |
|
||
| filterable | whether the options can be searched | boolean | — | — |
|
||
| filter-method | customize search logic, the first parameter is `node`, the second is `keyword`, and need return a boolean value indicating whether it hits. | function(node, keyword) | - | - |
|
||
| debounce | debounce delay when typing filter keyword, in milliseconds | number | — | 300 |
|
||
| before-filter | hook function before filtering with the value to be filtered as its parameter. If `false` is returned or a `Promise` is returned and then is rejected, filtering will be aborted | function(value) | — | — |
|
||
| popper-class | custom class name for Cascader's dropdown | string | — | — |
|
||
|
||
### Cascader Events
|
||
| Event Name | Description | Parameters |
|
||
|---------- |-------- |---------- |
|
||
| change | triggers when the binding value changes | value |
|
||
| expand-change | triggers when expand option changes | an array of the expanding node's parent nodes |
|
||
| blur | triggers when Cascader blurs | (event: Event) |
|
||
| focus | triggers when Cascader focuses | (event: Event) |
|
||
| visible-change | triggers when the dropdown appears/disappears | true when it appears, and false otherwise |
|
||
| remove-tag | triggers when remove tag in multiple selection mode | the value of the tag which is removed |
|
||
|
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### Cascader Methods
|
||
| Method Name | Description | Parameters |
|
||
| ---- | ---- | ---- |
|
||
| getCheckedNodes | get an array of currently selected node | (leafOnly) whether only return the leaf checked nodes, default is `false` |
|
||
|
||
### Cascader Slots
|
||
| Slot Name | Description |
|
||
|---------|-------------|
|
||
| - | the custom content of cascader node, the parameter is { node, data }, which are current Node object and node data respectively. |
|
||
| empty | content when there is no matched options. |
|
||
|
||
### CascaderPanel Attributes
|
||
| Attribute | Description | Type | Accepted Values | Default |
|
||
|---------- |-------- |---------- |------------- |-------- |
|
||
| model-value / v-model | binding value | - | — | — |
|
||
| options | data of the options，the key of `value` and `label` can be customize by `Props`.| array | — | — |
|
||
| props | configuration options, see the following table. | object | — | — |
|
||
|
||
### CascaderPanel Events
|
||
| Event Name | Description | Parameters |
|
||
|---------- |-------- |---------- |
|
||
| change | triggers when the binding value changes | value |
|
||
| expand-change | triggers when expand option changes | an array of the expanding node's parent nodes |
|
||
|
||
### CascaderPanel Methods
|
||
| Method Name | Description | Parameters |
|
||
| ---- | ---- | ---- |
|
||
| getCheckedNodes | get an array of currently selected node | (leafOnly) whether only return the leaf checked nodes, default is `false` |
|
||
| clearCheckedNodes | clear checked nodes | - |
|
||
|
||
### CascaderPanel Slots
|
||
| Slot Name | Description |
|
||
|---------|-------------|
|
||
| - | the custom content of cascader node, the parameter is { node, data }, which are current Node object and node data respectively. |
|
||
|
||
### Props
|
||
| Attribute | Description | Type | Accepted Values | Default |
|
||
| -------- | ----------------- | ------ | ------ | ------ |
|
||
| expandTrigger | trigger mode of expanding options | string | click / hover | 'click' |
|
||
| multiple | whether multiple selection is enabled | boolean | - | false |
|
||
| checkStrictly | whether checked state of a node not affects its parent and child nodes | boolean | - | false |
|
||
| emitPath | when checked nodes change, whether to emit an array of node's path, if false, only emit the value of node. | boolean | - | true |
|
||
| lazy | whether to dynamic load child nodes, use with `lazyload` attribute | boolean | - | false |
|
||
| lazyLoad | method for loading child nodes data, only works when `lazy` is true | function(node, resolve) | - | - |
|
||
| value | specify which key of node object is used as the node's value | string | — | 'value' |
|
||
| label | specify which key of node object is used as the node's label | string | — | 'label' |
|
||
| children | specify which key of node object is used as the node's children | string | — | 'children' |
|
||
| disabled | specify which key of node object is used as the node's disabled | string | — | 'disabled' |
|
||
| leaf | specify which key of node object is used as the node's leaf field | string | — | 'leaf' |
|