TreeSelect 分类选择

单选模式

<van-tree-select
  v-model:active-id="state.activeId"
  v-model:main-active-index="state.activeIndex"
  :items="items"
/>

import { reactive } from 'vue';
export default {
  setup() {
    const state = reactive({
      activeId: 1,
      activeIndex: 0,
    });
    const items = [
      {
        text: '浙江',
        children: [
          { text: '杭州', id: 1 },
          { text: '温州', id: 2 },
        ],
      },
      {
        text: '江苏',
        children: [
          { text: '南京', id: 5 },
        ],
      },
    ];
    return {
      state,
      items,
    };
  },
};

多选模式

active-id 为数组格式时，可以选中多个右侧选项。

import { reactive } from 'vue';
  setup() {
    const state = reactive({
      activeId: [1, 2],
      activeIndex: 0,
    });
    const items = [
      {
        text: '浙江',
        children: [
          { text: '杭州', id: 1 },
          { text: '温州', id: 2 },
        ],
      },
      {
        text: '江苏',
        children: [
          { text: '南京', id: 5 },
          { text: '无锡', id: 6 },
        ],
      },
    ];
    return {
      state,
    };
  },
};

<van-tree-select
  v-model:main-active-index="activeIndex"
  height="55vw"
  :items="items"
>
  <template #content>
    <van-image
      v-if="activeIndex === 0"
      src="https://img.yzcdn.cn/vant/apple-1.jpg"
    />
    <van-image
      v-if="activeIndex === 1"
    />
  </template>
</van-tree-select>

徽标提示

设置 dot 属性后，会在图标右上角展示一个小红点；设置 badge 属性后，会在图标右上角展示相应的徽标。

<van-tree-select
  v-model:main-active-index="activeIndex"
  height="55vw"
  :items="items"
/>

import { ref } from 'vue';
export default {
  setup() {
    const activeIndex = ref(0);
    return {
      activeIndex,
      items: [
        { text: '浙江', children: [], dot: true },
        { text: '江苏', children: [], badge: 5 },
      ],
    };
  },

API

Props

Slots

Item 数据结构

组件提供了下列 Less 变量，可用于自定义样式，使用方法请参考主题定制。