vue中父子组件之间相互传值

父传子：

 父组件：

<view-doc :openDialog="openDialog"></view-doc>

　　

import viewDoc from './components/viewDoc'

components: {
    'view-doc': viewDoc,
  },
data () {
   return {
     openDialog:'123'
   }  
}

　　

　子组件：　

props: {
    openDialog: Object
  },
  watch: {
    'openDialog.formData' (msg) {
      console.log(msg)
      this.form = {
        mobile: msg.mobile,
        email: msg.email,
        name: msg.name,
        note: msg.note,
      }
    }
  }

　　　

子传父：

父组件：

<view-doc v-on:childByValue="childByValue"></view-doc>

　　

import viewDoc from './components/viewDoc'

components: {
    'view-doc': viewDoc,
  },

childByValue: function (childValue) {
      // childValue就是子组件传过来的值
      console.log(childValue,'值')
    },

　　

子组件：

<el-button type="primary" @click="submitMessage">确定</el-button>

　　

submitMessage () {
      console.log(this.getCheckMessage)
      this.$emit('childByValue', this.getCheckMessage)

    },