VantUI自定义Tabbar图标切换+路由跳转

在src目录下新建个components文件夹来放自己定义的tabbar组件

<template>
  <div
    v-if="
      $route.name == 'index' ||
        $route.name == 'learn' ||
        $route.name == 'knowledge' ||
        $route.name == 'personal'
    "
  >
    <van-tabbar v-model="active" inactive-color="#666666" active-color="#000000" placeholder>
      <van-tabbar-item replace v-for="(item, index) in tabbarList" :key="index" :to="item.name">
        <span>{{ item.title }}span>
        <img slot="icon" slot-scope="props" :src="props.active ? item.active : item.normal" />
      van-tabbar-item>
    van-tabbar>
  div>
template>

<script>
export default {
  name: "tabbar",
  data() {
    return {
      active: 0,
      tabbarList: [
        {
          name: "index",
          title: "发现",
          normal:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-fx2.png",
          active:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-fx.png"
        },
        {
          name: "learn",
          title: "学习",
          normal:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-xx.png",
          active:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-xx2.png"
        },
        {
          name: "knowledge",
          title: "问吧",
          normal:
            "https://sucai.suoluomei.cn/sucai_zs/images/20200420134504-1.png",
          active:
            "https://sucai.suoluomei.cn/sucai_zs/images/20200420134504-2.png"
        },
        {
          name: "personal",
          title: "我的",
          normal:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-wd.png",
          active:
            "https://sucai.suoluomei.cn/sucai_zs/images/20190910093117-wd2.png"
        }
      ]
    };
  },
  watch: {
    //监听路由变化
    $route(to) {
      this.tabbarActive(to.name);
    }
  },

  methods: {
    tabbarActive(name) {
      var index = this.tabbarList.map(item => item.name).indexOf(name);
      if (index != -1) {
        this.active = index;
      }
    }
  }
};
script>

<style lang="less" scoped>style>

引入tabbar组件的页面到app.vue

<template>
  <div id="app">
  <router-view />
    <tabbar>tabbar>
  div>
template>

<script>
import tabbar from "./components/tabbar.vue";  //引用组件的地址
export default {
  components: {
    tabbar
  },
  name: "App",
  data() {
    return {};
  },
  methods: {},

};
script>

<style>
style>

END