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Implementation method for transferring data between Vue components (code)
Implementation method for transferring data between Vue components (code)
This article brings you a detailed explanation of PHP synergy implementation (with code). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
1. The child component passes data to the parent component
<body>
<div id="app">
父组件：{{total}}
<br>
<son-component v-bind:total="total"></son-component>
</div>
<script>
Vue.component('son-component',{
template:'<div>子组件：{{total}}+{{num}}={{add}}</div>',
props:{
total:Number
},
data(){
return {
num:10
}
},
computed:{
add:function(){
return num=this.total+this.num
}
}
})
var app=new Vue({
el:'#app',
data:{
total:1
},
})
</script>
</body>Dynamically binds the data to be passed in the parent component through v-bind, and the child component receives the data passed by the parent component through the props attribute.
2. The parent component passes data to the child component
<body>
<div id="app">
<son-component v-on:change="getData"></son-component>
<br>
{{total}}
</div>
<script>
Vue.component('son-component',{
template:'<button v-on:click=sendData>点击我向父组件传值</button>',
data(){
return{
count:1
}
},
methods:{
sendData:function(){
this.$emit('change',this.count)
}
}
})
var app=new Vue({
el:'#app',
data:{
total:1
},
methods:{
getData:function(value){
this.total=this.total+value
}
}
})
</script>
</body>Customize an event, trigger the custom event in the child component through this.$emit() and give The parent component passes data, and custom events are listened to and received in the parent component.
3. Communication between non-parent and child components
<body>
<div id="app">
<a-component></a-component>
<b-component></b-component>
</div>
<script>
Vue.component('a-component',{
template:`
<div>
<span>a组件的数据：{{num}}</span><br>
<button v-on:click="sendData">击我向b组件传递数据</button>
</div>
`,
data(){
return {
num:1
}
},
methods:{
sendData:function(){
this.$root.bus.$emit('change',this.num)
}
}
})
Vue.component('b-component',{
template:`
<div>b组件接收a组件数据后相加的数据：{{count}}</div>
`,
data(){
return {
count: 10
}
},
created:function(){
this.$root.bus.$on('change',(value)=>{
//alert(value)
this.count=this.count+value
})
}
})
var app=new Vue({
el:'#app',
data:{
bus:new Vue()
},
})
</script>
</body>The above is the detailed content of Implementation method for transferring data between Vue components (code). For more information, please follow other related articles on the PHP Chinese website!
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