Vue life cycle (hook function)
Vue has a total of 10 life cycle functions, and we can use these functions to operate data or change content at each stage of Vue.
Full code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script type="text/javascript" src="../assets/js/vue.js"></script>
<title>Constructor declaration cycle</title>
</head>
<body>
<h1>Constructor declaration cycle</h1>
<hr>
<div id="app">
{{message}}
<p><button @click="jia">加分</button></p>
</div>
<button onclick="app.$destroy()">销毁</button>
<script type="text/javascript">
var app = new Vue ({
el: '#app' ,
data:{
message:1
},
methods:{
jia:function(){
this.message ++;
}
},
beforeCreate:function(){
console.log( '1-beforeCreate after initialization' );
},
created:function(){
console.log( '2-created creation completed' );
},
beforeMount:function(){
console.log( '3-beforeMount before mount' );
},
mounted:function(){
console.log( '4-mounted was created' );
},
beforeUpdate:function(){
console.log( '5-beforeUpdate before the data is updated' );
},
updated:function(){
console.log( '6-updated after being updated' );
},
activated:function(){
console.log('7-activated');
},
deactivated:function(){
console.log('8-deactivated');
},
beforeDestroy:function(){
console.log( '9-beforeDestroy' );
},
destroyed:function(){
console.log( '10-destroyed after destruction' )
}
})
</script>
</body>
</html>