vue父子组件间传值
父组件给子组件传值
父组件:
<template> <div id="container"> <Child :msg="data"></Child> </div> </template> <script> import Child from "@/components/Child"; export default { data() { return { data: "父组件的值" }; }, methods: { }, components: { Child } }; </script>
子组件:
<template> <div id="container"> <h1>{{msg}}</h1> </div> </template> <script> export default { data() { return {}; }, props:["msg"] }; </script>
方法二:可以通过$refs来触发,同时传参
<template> <div id="container"> <h1 @click="getData">点击将触发子组件方法,并把参数传给子组件</h1> <child ref="mychild"></child> </div> </template> <script> import Child from "@/components/Child"; export default { data() { return { name: '', age: '' }; }, components: { Child } methods: { getData(){ //触发子组件方法,并传参 this.$refs.mychild.init("chrchr","120"); } }, }; </script>
子组件:
<template> <div id="container"> <h1>{{name}}</h1> <h1>{{age}}</h1> </div> </template> <script> export default { props:["msg"], data() { return { name: '', age: '' }; }, mounted:{ }, method:{ //父组件触发子组件的init方法 init(name,age){ this.name = name; this.age = age; } } }; </script>
子组件给父组件传值:通过 this.$emit 来传值
<template> <div class="app"> <input @click="sendMsg" type="button" value="给父组件传递值"> </div> </template> <script> export default { data () { return { //将msg传递给父组件 msg: "我是子组件的msg", } }, methods:{ sendMsg(){ //func: 是父组件指定的传数据绑定的函数,this.msg:子组件给父组件传递的数据 this.$emit('func',this.msg) } } } </script>
父组件接收:
<template> <div class="app"> <child @func="getMsgFormSon"></child> </div> </template> <script> import child from './child.vue' export default { data () { return { msgFormSon: "this is msg" } }, components:{ child, }, methods:{ getMsgFormSon(data){ this.msgFormSon = data console.log(this.msgFormSon) } } } </script>
这两种传值也可以通过 vuex 来实现