<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>动态组件</title>
<script src="js/vue.js"></script>
</head>
<body>
<div id="itany">
<button @click="flag='my-hello'">显示hello组件</button>
<button @click="flag='my-world'">显示world组件</button>
<div>
<!-- 使用keep-alive组件缓存非活动组件，可以保留状态，避免重新渲染，默认每次都会销毁非活动组件并重新创建 -->
<keep-alive>
<component :is="flag"></component>
</keep-alive>
</div>
</div>
<script>
var vm=new Vue({
el:'#itany',
data:{
flag:'my-hello'
},
components:{
'my-hello':{
template:'<h3>我是hello组件：{{x}}</h3>',
data(){
return {
x:Math.random()
}
}
},
'my-world':{
template:'<h3>我是world组件：{{y}}</h3>',
data(){
return {
y:Math.random()
}
}
}
}
});
</script>
</body>
</html>