Vue中子组件调用父组件的3种方法实例
1.在子组件中通过“this.$parent.event”来调用父组件的方法
父组件如下:
<template> <div> <child></child> </div> </template> <script> import child from './components/childcomponent'; export default { components: { child }, methods: { fatherMethod() { console.log('父组件方法'); } } }; </script>
子组件如下:
<template> <div> <button @click="childMethod()">点击按钮</button> </div> </template> <script> export default { methods: { childMethod() { this.$parent.fatherMethod(); } } }; </script>
2.子组件用“$emit”向父组件触发一个事件,父组件调用或监听这个事件即可
父组件如下:
<template> <div> <child @fatherMethod="fatherMethod"></child> </div> </template> <script> import child from './components/childcomponent' export default { components: { child }, methods: { fatherMethod() { console.log('父组件方法'); } } }; </script>
子组件如下:
<template> <div> <button @click="childMethod()">点击按钮</button> </div> </template> <script> export default { methods: { childMethod() { this.$emit('fatherMethod'); } } }; </script>
3.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
父组件如下:
<template> <div> <child :fatherMethod="fatherMethod"></child> </div> </template> <script> import child from './components/childcomponent'; export default { components: { child }, methods: { fatherMethod() { console.log('父组件方法'); } } }; </script>
子组件如下:
<template> <div> <button @click="childMethod()">点击按钮</button> </div> </template> <script> export default { props: { fatherMethod: { type: Function, default: null } }, methods: { childMethod() { this.fatherMethod(); } } } }; </script>
源文件:https://www.jb51.net/article/249132.htm