<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="./js/vue.js"></script>
</head>
<body>
<div id="app">
<child-1></child-1>
<child-2></child-2>
</div>
<script>
//1.创建公共的vue对象
var bridge = new Vue();
//2.创建两个兄弟组件
Vue.component(‘child-1‘,{
template:`
<div>
<input type="button" value="1->2" @click="sendData"/>
</div>
`,
methods:{
sendData:function(){
bridge.$emit(‘OneToTwoEvent‘,‘Hello 2, I am 1‘);
}
}
});
Vue.component(‘child-2‘,{
template:`
<div>
<h4>{{msg}}</h4>
</div>
`,
data:function(){
return {
msg:‘‘
}
},
mounted:function(){
bridge.$on(‘OneToTwoEvent‘,function(msg){
console.log(‘收到来自1的：‘+msg);
this.msg=msg;
})
}
})
var vm = new Vue({
el:"#app"
})
</script>
</body>
</html>
原文：https://www.cnblogs.com/lukairui/p/14452981.html