vue父子组件通信
一:在子组件中通过this.$parent.event来调用父组件的方法
父组件:
<template> <div> <child></child> </div> </template> <script> import child from './components/dam/child'; export default { components: { child }, methods: { fatherMethod() { console.log('测试'); } } }; </script>
子组件:
<template> <div> <button @click="childMethod()">点击</button> </div> </template> <script> export default { methods: { childMethod() { this.$parent.fatherMethod(); } } }; </script>
二:在子组件里用$emit向父组件触发一个事件,父组件监听这个事件
父组件:
<template> <div> <child @fatherMethod="fatherMethod"></child> </div> </template> <script> import child from '~/components/dam/child'; export default { components: { child }, methods: { fatherMethod() { console.log('测试'); } } }; </script>
子组件:
<template> <div> <button @click="childMethod()">点击</button> </div> </template> <script> export default { methods: { childMethod() { this.$emit('fatherMethod'); } } }; </script>
三:父组件把方法传入子组件中,在子组件里直接调用这个方法
父组件:
<template> <div> <child :fatherMethod="fatherMethod"></child> </div> </template> <script> import child from '~/components/dam/child'; export default { components: { child }, methods: { fatherMethod() { console.log('测试'); } } }; </script>
子组件:
<template> <div> <button @click="childMethod()">点击</button> </div> </template> <script> export default { props: { fatherMethod: { type: Function, default: null } }, methods: { childMethod() { if (this.fatherMethod) { this.fatherMethod(); } } } }; </script> <template> <div> <button @click="fatherMethod()">点击</button> </div> </template> <script> export default { props: { fatherMethod: { type: Function, default: null } }, methods: {} }; </script>
原文:https://blog.csdn.net/Leon_940002463/article/details/103406103