vue父子组件生命周期执行顺序是怎么样的?
Vue的生命周期中,我们最常用的生命周期方法,莫过于created、mounted,前者是在web页面初始化时执行,后者是在web页面渲染完毕执行,本文基于 vue-cli 简单演示下,便可知道vue父子组件生命周期执行顺序。
父组件App.vue
<template>
<div id="app">
<img alt="Vue logo" src="./assets/logo.png">
<HelloWorld msg="Welcome to Your Vue.js App"/>
</div>
</template>
<script>
import HelloWorld from './components/HelloWorld.vue'
export default {
name: 'App',
components: {
HelloWorld
},
created() { console.log('父created')
},
mounted() { console.log('父mounted')
}
}</script>
<style>
#app {
font-family: Avenir, Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>子组件HelloWorld.vue
<template>
<div class="hello">
<h1>{{ msg }}</h1>
<p>
For a guide and recipes on how to configure / customize this project,<br>
check out the <a href="https://cli.vuejs.org" target="_blank" rel="noopener">vue-cli documentation</a>. </p>
<h3>Installed CLI Plugins</h3>
<ul>
<li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-babel" target="_blank" rel="noopener">babel</a></li>
<li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-eslint" target="_blank" rel="noopener">eslint</a></li>
</ul>
<h3>Essential Links</h3>
<ul>
<li><a href="https://vuejs.org" target="_blank" rel="noopener">Core Docs</a></li>
<li><a href="https://forum.vuejs.org" target="_blank" rel="noopener">Forum</a></li>
<li><a href="https://chat.vuejs.org" target="_blank" rel="noopener">Community Chat</a></li>
<li><a href="https://twitter.com/vuejs" target="_blank" rel="noopener">Twitter</a></li>
<li><a href="https://news.vuejs.org" target="_blank" rel="noopener">News</a></li>
</ul>
<h3>Ecosystem</h3>
<ul>
<li><a href="https://router.vuejs.org" target="_blank" rel="noopener">vue-router</a></li>
<li><a href="https://vuex.vuejs.org" target="_blank" rel="noopener">vuex</a></li>
<li><a href="https://github.com/vuejs/vue-devtools#vue-devtools" target="_blank" rel="noopener">vue-devtools</a></li>
<li><a href="https://vue-loader.vuejs.org" target="_blank" rel="noopener">vue-loader</a></li>
<li><a href="https://github.com/vuejs/awesome-vue" target="_blank" rel="noopener">awesome-vue</a></li>
</ul>
</div></template><script>export default {
name: 'HelloWorld',
props: {
msg: String
},
created() { console.log('子created')
},
mounted() { console.log('子mounted')
}
}</script><!-- Add "scoped" attribute to limit CSS to this component only --><style scoped>h3 { margin: 40px 0 0;
}
ul { list-style-type: none; padding: 0;
}
li { display: inline-block; margin: 0 10px;
}
a { color: #42b983;
}</style>vue父子组件生命周期执行顺序结果
就像一个钩子一样,亦类似栈的先进后出,看图可以得知vue父子组件生命周期执行顺序为:父created -> 子created -> 子mounted -> 父mounted

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原文地址:https://tangjiusheng.cn/vue/288.html
原文地址:https://tangjiusheng.cn/vue/288.html
