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06-lifecycle-hooks.html
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06-lifecycle-hooks.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.3.4/vue.js"></script>
<style>
body {
font-size: 1.5em;
}
#app {
margin-bottom: 1em;
}
</style>
</head>
<div id="app">
<h1>{{ count }}</h1>
<button @click="updateEvent">Update</button>
</div>
<button id="del">Del</button>
<script>
var vm = new Vue({
el: '#app',
data: {
count: 0
},
methods: {
updateEvent: function() {
this.count += 1;
}
},
beforeCreate: function() {
// 元件實體剛被建立，屬性計算之前。
console.log('beforeCreate - this.count: ', this.count);
console.log('beforeCreate - this.$el: ', this.$el);
},
created: function() {
// 元件實體已建立，屬性已綁定，但 DOM 還沒生成。
console.log('created - this.count: ', this.count);
console.log('created - this.$el: ', this.$el);
},
beforeMount: function() {
// 模板 (template) 編譯或掛載至 HTML 之前
console.log('beforeMount - this.$el: ', this.$el);
},
mounted: function() {
// 模板 (template) 編譯或掛載至 HTML 之後
console.log('mounted - this.$el: ', this.$el);
},
beforeUpdate: function() {
// 元件被更新之前
console.log('beforeUpdate: ',
this.$el.querySelector('h1').innerText,
this.count);
},
updated: function() {
// 元件被更新之後
console.log('updated: ',
this.$el.querySelector('h1').innerText,
this.count);
},
beforeDestroy: function() {
// 移除 vue instance 之前
console.log('beforeDestroy');
},
destroyed: function() {
// 移除 vue instance 之後
console.log('destroyed');
}
});
document.getElementById('del').addEventListener('click', function() {
vm.$destroy();
});
</script>
</html>