<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="root">
<child content="dell"></child>
<child content="Lee"></child>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<script>
Vue.prototype.bus=new Vue();
Vue.component('child',{
props:{
content:String
},
data(){
return{
selfContent:this.content
}
},
template:'<div @click="handleClick">{{selfContent}}</div>',
methods:{
handleClick(){
this.bus.$emit('change',this.selfContent)
}
},
mounted(){
this.bus.$on('change',(msg)=>{
this.selfContent=msg;
})
}
})
var vm=new Vue({
el:"#root"
})
</script>
</body>
</html>
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