npm install vue-wechat-title --save

//设置title
import VueWechatTitle from 'vue-wechat-title'
Vue.use(VueWechatTitle)

 {
  path: '/login',
  component: Login,
  meta: {
  title: '登录'
  }
 }

<template>
 <div class="hours-con container" v-wechat-title="$route.meta.title">
   .....
 </div>
</template>


//js动态设置,即可在跳转页面时根据条件改变title了
if(zong){
 this.$route.meta.title = '总课时'

meta: {

 keepAlive: true
 }

<keep-alive>

<router-view v-if="$route.meta.keepAlive"></router-view>
</keep-alive>

<router-view v-if="!$route.meta.keepAlive"></router-view>