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