需求
现在有一个需求,要求不刷新浏览器,但要刷新路由中的组件
方案
- 将需要keepAlive的页面name加入到keep-live的include中。
- Vue的transition组件,有一个after-enter钩子事件,待子组件插入完毕调用,正好适合这个场景,在这个钩子中,将当前组件添加到keep-live的include中。
- 在刷新时,从keepAliveArr中移除当前组件的name,然后利用v-if删除router-view组件,在nextTick事件后将router-view添加回来,实现组件的刷新
代码
template
<transition @after-enter="afterRouterChange">
<keep-alive :include="keepAliveArr">
<router-view v-if="refreshControl" ref="child"/>
</keep-alive>
</transition>
<button @click="refreshChild"></button>
script
export default {
name: 'index',
data () {
return {
keepAliveArr: [],
refreshControl: true
}
},
methods: {
refreshChild () {
// 先移除,再加载,强制刷新子页面
const name = this.$refs.child.$options.name
this.keepAliveArr.splice(this.keepAliveArr.indexOf(name), 1)
this.refreshControl = false
this.$nextTick(() => this.refreshControl = true)
},
afterRouterChange () {
// 记录子组件name,用于keepalive
const childName = this.$refs.child.$options.name
this.pageTabList[this.pageTabIndex].name = childName
if (!this.keepAliveArr.includes(childName)) {
this.keepAliveArr.push(childName)
}
}
}
}