vue组件之间的传值

1.父子之间的传值:

  1》父传给子:通过props属性

  2》子传给父:通过事件触发,$emit

2.兄弟组件之间的传值:

  定一个一个eventBus.js文件,内容如下:

import Vue from 'vue' 
const Bus = new Vue(); 
export default Bus

  定义第一个兄弟组件:firstChildren.vue:内容如下:

<template>
  <div>
    <h3>firstChildren向其他兄弟组件传值</h3>
    <button v-on:click="sendMsg"组件传值></button>
  </div>
</template>
<script>
import bus from '@assets/js/eventBus'
export default {
  methods:{
    sendMsg(){
      bug.$emit('childrenEvent','this msg is from firstChild')
    }
  }
}
</script>

再定义另外一个兄弟组件去接收传过来的值:secondChildren:

  

<template>
  <div>
    <h3>secondChildren组件</h3>
    <p>组件传值{{msg}}</p>
  </div>
</template>
<script>
import bus from '@assets/js/eventBus'
export default {
  data(){
    return {
      msg:'hello world'
    }
  },
  methods:{
    sendMsg(){
      bug.on('childrenEvent',(msg)=>{
        this.msg = msg || 'hello world'
      })
    }
  }
}
</script>
原文地址:https://www.cnblogs.com/pylf/p/14419511.html