父子组件通信添加效果：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id='app'>
<chat></chat>
</div>
<script src="../../js/vue.js"></script>
<script>
Vue.component('chat',{
template:`
<div>
<ul>
<li v-for="value in arr">{{value}}</li>
</ul>
<user @send='rcvMsg' userName='jack'></user>
<user @send='rcvMsg' userName='rose'></user>
</div>
`,
data:function(){
return{
arr:[]
}
},
methods:{
rcvMsg:function(txt){
this.arr.push(txt)
}
}
})
Vue.component('user',{
props:['userName'],
template:`
<div>
<label>{{userName}}</label>
<input type='text' v-model='inputVal'>
<button @click='sendMsg'>发送</button>
</div>
`,
data:function(){
return{
inputVal:''
}
},
methods:{
sendMsg:function(){
this.$emit('send',this.userName+':'+this.inputVal)
}
}
})
new Vue({
el:'#app'
})
</script>
</body>
</html>
效果图：
QQ拼音截图未命名.png
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