引入

import Vue from 'vue';
import { Tabbar, TabbarItem } from 'vant';

Vue.use(Tabbar);
Vue.use(TabbarItem);

代码演示

基础用法

v-model默认绑定选中标签的索引值，通过修改v-model即可切换选中的标签

<van-tabbar v-model="active">
  <van-tabbar-item icon="home-o">标签</van-tabbar-item>
  <van-tabbar-item icon="search">标签</van-tabbar-item>
  <van-tabbar-item icon="friends-o">标签</van-tabbar-item>
  <van-tabbar-item icon="setting-o">标签</van-tabbar-item>
</van-tabbar>

export default {
  data() {
    return {
      active: 0
    }
  }
}

通过名称匹配

在标签指定name属性的情况下，v-model的值为当前标签的name

<van-tabbar v-model="active">
  <van-tabbar-item name="home" icon="home-o">标签</van-tabbar-item>
  <van-tabbar-item name="search" icon="search">标签</van-tabbar-item>
  <van-tabbar-item name="friends" icon="friends-o">标签</van-tabbar-item>
  <van-tabbar-item name="setting" icon="setting-o">标签</van-tabbar-item>
</van-tabbar>

export default {
  data() {
    return {
      active: 'home'
    }
  }
}

提示信息

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

<van-tabbar v-model="active">
  <van-tabbar-item icon="home-o">标签</van-tabbar-item>
  <van-tabbar-item icon="search" dot>标签</van-tabbar-item>
  <van-tabbar-item icon="friends-o" info="5">标签</van-tabbar-item>
  <van-tabbar-item icon="setting-o" info="20">标签</van-tabbar-item>
</van-tabbar>

自定义图标

通过 icon 插槽自定义图标，可以通过 slot-scope 判断标签是否选中

<van-tabbar v-model="active">
  <van-tabbar-item info="3">
    <span>自定义</span>
    <img
      slot="icon"
      slot-scope="props"
      :src="props.active ? icon.active : icon.inactive"
    >
  </van-tabbar-item>
  <van-tabbar-item icon="search">标签</van-tabbar-item>
  <van-tabbar-item icon="setting-o">标签</van-tabbar-item>
</van-tabbar>

export default {
  data() {
    return {
      active: 0,
      icon: {
        active: 'https://img.yzcdn.cn/vant/user-active.png',
        inactive: 'https://img.yzcdn.cn/vant/user-inactive.png'
      }
    }
  }
}

自定义颜色

<van-tabbar
  v-model="active"
  active-color="#07c160"
  inactive-color="#000"
>
  <van-tabbar-item icon="home-o">标签</van-tabbar-item>
  <van-tabbar-item icon="search">标签</van-tabbar-item>
  <van-tabbar-item icon="freinds-o">标签</van-tabbar-item>
  <van-tabbar-item icon="setting-o">标签</van-tabbar-item>
</van-tabbar>

监听切换事件

<van-tabbar v-model="active" @change="onChange">
  <van-tabbar-item icon="home-o">标签1</van-tabbar-item>
  <van-tabbar-item icon="search">标签2</van-tabbar-item>
  <van-tabbar-item icon="freinds-o">标签3</van-tabbar-item>
  <van-tabbar-item icon="setting-o">标签4</van-tabbar-item>
</van-tabbar>

import { Notify } from 'vant';

export default {
  methods: {
    onChange(index) {
      Notify({ type: 'primary', message: index });
    }
  }
}

路由模式

标签栏支持路由模式，用于搭配vue-router使用。路由模式下会匹配页面路径和标签的to属性，并自动选中对应的标签

<router-view />

<van-tabbar route>
  <van-tabbar-item replace to="/home" icon="home-o">
    标签
  </van-tabbar-item>
  <van-tabbar-item replace to="/search" icon="search">
    标签
  </van-tabbar-item>
</van-tabbar>

API

Tabbar Props

Tabbar Events

TabbarItem Props

TabbarItem Slots