解决Vue中使用keepAlive不缓存问题

1.查看app.vue文件，这个是重点，不能忘记加（我就是忘记加了keep-alive）

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

2.查看router.js

{
 path:'/loanmessage',
 component:loanmessage,
 name:'loanmessage',
 meta: {
  keepAlive: true, //代表需要缓存
  isBack: false,
 },

3.在需要缓存的页面加入如下代码

beforeRouteEnter(to, from, next) {
 if (from.name == 'creditInformation' || from.name == 'cityList') {
  to.meta.isBack = true;
 }
 next();
},
activated() {
 this.getData()
 this.$route.meta.isBack = false
 this.isFirstEnter = false
 
},

附上钩子函数执行顺序：

• 不使用keep-alive
  

beforeRouteEnter --> created --> mounted --> destroyed

• 使用keep-alive
  

beforeRouteEnter --> created --> mounted --> activated --> deactivated
再次进入缓存的页面，只会触发beforeRouteEnter -->activated --> deactivated 。created和mounted不会再执行。

总结

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