底部栏

底部栏数据，写成一个js单独文件

const tabBarList = [
  { txt: '首页', iconStyle: `background-image: url(${icon1});`, iconStyle2: `background-image: url(${active1});`, path: '/' },
  { txt: '分类', iconStyle: `background-image: url(${icon2});`, iconStyle2: `background-image: url(${active2});`, path: '/class' },
  { txt: '发现', iconStyle: `background-image: url(${icon3});`, iconStyle2: `background-image: url(${active3});`, path: '/category' },
  { txt: '购物车', iconStyle: `background-image: url(${icon4});`, iconStyle2: `background-image: url(${active4});`, path: '/shopcar' },
  { txt: '我的', iconStyle: `background-image: url(${icon5});`, iconStyle2: `background-image: url(${active5});`, path: '/user' }
]
//iconStyle是底部栏的图标，透明图标和高亮的图标，两种样式
export { tabBarList }

vue文件

<template>
  <!-- 底部栏 -->
  <ul class="tab_bar">
    <router-link
      v-for="(item, index) in tabBarList"
      :key="index"
      class="tab_bar_list"
      :to="item.path">
        <div class="txt">{{item.txt}}</div>
        <div class="icon" :style="item.path !== path ? item.iconStyle: item.iconStyle2"></div> //通过路由路径判断显示图标样式
    </router-link>
  </ul>
</template>

<script>
import { tabBarList } from './getTabBarList.js'
export default {
  name: 'TabBar',
  data () {
    return {
      tabBarList,
      path: this.$route.path //获取所在的路由路径
    }
  },
  watch: {
    $route: {
      handler (val) {
        this.path = val.path //监听所在的路由路径，这样就实现了你点击底部栏那一个图标样式变化
      },
      deep: true
    }
  }
}
</script>

<style lang="less" scoped>
  .tab_bar {
    display: flex;
    justify-content: space-between;
    padding: 0 0.8rem;
    height: 1.2rem;
    background-color: #fff;
    border-top: 0.026666rem solid #eee;
    width: 10rem;
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translate(-50%);
    .tab_bar_list {
      display: flex;
      flex-direction: column-reverse;
      align-items: center;
      .txt {
        width: 100%; height: 0.266666rem;
        font-size: 0.266666rem; line-height: 0.266666rem;
        color: #333333;
        text-align: center;
        margin: 0.106666rem 0 0.16rem 0;
      }
      .icon {
        width: 0.64rem; height: 0.48rem;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
      }
    }
  }
</style>