<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>动态组件与v-once指令</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
</head>
<body>
<div id="app">
<component :is="type"></component>
<!-- <child-one v-if='type=="child-one"'></child-one> -->
<!-- <child-two v-if='type=="child-two"'></child-two> -->
<button @click='handleClick'>切换</button>
</div>
<script>
Vue.component("child-one",{
template:"<div v-once>child-one</div>"
});
Vue.component("child-two",{
template:"<div v-once>child-two</div>"
});
new Vue({
el:"#app",
data:{
type:"child-one"
},
methods:{
handleClick:function(){
this.type=(this.type=='child-one' ? 'child-two':'child-one');
}
}
})
</script>
</body>
</html>
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