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vue常用路由router之“组件被激活,与失活”生命周期钩子

夕阳孤草 2022-03-12 阅读 69
  1. 作用:路由组件所独有的两个钩子,用于捕获路由组件的激活状态。
  2. 具体名字:
    1. activated路由组件被激活时触发。
    2. deactivated路由组件失活时触发。

案列展示:

1.父组件

<template>
	<div>
		<h2>Home组件内容</h2>
		<div>
			<ul class="nav nav-tabs">
				<li>
					<router-link class="list-group-item" active-class="active" to="/home/news">News</router-link>
				</li>
				<li>
					<router-link class="list-group-item" active-class="active" to="/home/message">Message</router-link>
				</li>
			</ul>
			<keep-alive include="News">
				<router-view></router-view>
			</keep-alive>
		</div>
	</div>
</template>

<script>
	export default {
		name:'Home',
		/* beforeDestroy() {
			console.log('Home组件即将被销毁了')
		}, */
		/* mounted() {
			console.log('Home组件挂载完毕了',this)
			window.homeRoute = this.$route
			window.homeRouter = this.$router
		},  */
	}
</script>

2.子组件

<template>
	<ul>
		<li :style="{opacity}">欢迎学习Vue</li>
		<li>news001 <input type="text"></li>
		<li>news002 <input type="text"></li>
		<li>news003 <input type="text"></li>
	</ul>
</template>

<script>
	export default {
		name:'News',
		data() {
			return {
				opacity:1
			}
		},
		/* beforeDestroy() {
			console.log('News组件即将被销毁了')
			clearInterval(this.timer)
		}, */
		/* mounted(){
			this.timer = setInterval(() => {
				console.log('@')
				this.opacity -= 0.01
				if(this.opacity <= 0) this.opacity = 1
			},16)
		}, */
		activated() {
			console.log('News组件被激活了')
			this.timer = setInterval(() => {
				console.log('@')
				this.opacity -= 0.01
				if(this.opacity <= 0) this.opacity = 1
			},16)
		},
		deactivated() {
			console.log('News组件失活了')
			clearInterval(this.timer)
		},
	}
</script>
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