element-plus/docs/examples/cascader/basic.vue

<template>
  <div class="block">
    <span class="demonstration"
      >Child options expand when clicked (default)</span
    >
    <el-cascader
      v-model="value"
      :options="options"
      @change="handleChange"
    ></el-cascader>
  </div>
  <div class="block">
    <span class="demonstration">Child options expand when hovered</span>
    <el-cascader
      v-model="value"
      :options="options"
      :props="props"
      @change="handleChange"
    ></el-cascader>
  </div>
</template>

<script lang="ts">
import { defineComponent, reactive, toRefs } from 'vue'

export default defineComponent({
  setup() {
    const state = reactive({
      value: [],
      props: {
        expandTrigger: 'hover',
      },
      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: 'Menu',
                },
                {
                  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',
            },
          ],
        },
      ],
    })
    const handleChange = (value) => {
      console.log(value)
    }
    return {
      ...toRefs(state),
      handleChange,
    }
  },
})
</script>

<style lang="scss" scoped>
.block {
  margin: 1rem;
}
.demonstration {
  margin: 1rem;
}
</style>