<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<!--
1.父给子传值 属性 props:['属性']
2.子给父传 用事件传 $emit
3.非父子 用第三方量
-->
<div id='app'>
<child></child>
<son></son>
</div>
<script src='js/vue.js'></script>
<script>
var bus=new Vue()
Vue.component('child',{
template:`
<div>
<h1>这是组件A</h1>
<button @click='sendMsg'>点击按钮传值</button>
</div>
`,
data:function(){
return{
msg:'非父子组件传值'
}
},
methods:{
sendMsg:function(){
bus.$emit('send',this.msg)
}
}
})
Vue.component('son',{
template:`
<div>
<h1>这是组件B</h1>
<a href="#">{{mess}}</a>
</div>
`,
data:function(){
return{
mess:''
}
},
mounted:function(){
bus.$on('send',msg=>{
console.log(this);
this.mess=msg;
})
}
})
new Vue({
el:'#app'
})
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id='app'>
<chat-room></chat-room>
</div>
<script src='js/vue.js'></script>
<script>
Vue.component('chat-room',{
template:`
<div>
<ul>
<li v-for="(value,index) in chatcont">{{value}}</li>
</ul>
<user @send='rcvMsg' userName='jack'></user>
<user @send='rcvMsg' userName='rose'></user>
</div>
`,
data:function(){
return{
chatcont:[],
}
},
methods:{
rcvMsg:function(txt){
this.chatcont.push(txt)
}
}
})
Vue.component('user',{
props:['userName'],
template:`
<div>
<label>{{userName}}</label>
<input type='text' v-model='msg'>
<button @click='sendMsg'>发送</button>
</div>
`,
data:function(){
return{
msg:''
}
},
methods:{
sendMsg:function(){
this.$emit('send',this.userName+":"+this.msg)
}
}
})
new Vue({
el:'#app'
})
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id='app'>
<my-component></my-component>
</div>
<script src='js/vue.js'></script>
<script>
Vue.component('my-component',{
template:`<div>
<h1>我是父组件</h1>
<my-child v-bind:message='msg' @send='rcvMsg'></my-child>
<b>{{number}}</b>
</div>
`,
data:function(){
return{
msg:'hello vue',
number:''
}
},
methods:{
rcvMsg:function(txt){
alert(111)
this.number=txt
}
}
})
Vue.component("my-child",{
props:['message'],
template:`
<div>
<h2>我是子元素</h2>
<a href='#'>{{message}}</a>
<button @click='sendFather'>发送给父组件</button>
</div>
`,
data:function(){
return{
num:5
}
},
methods:{
sendFather:function(){
alert(111)
this.$emit('send',this.num)
}
}
})
new Vue({
el:'#app'
})
</script>
</body>
</html>
网友评论