个人 Vue.js 学习日记（十一） - 父子组件间的互相传值

时间 2019-11-08

标签个人 vue.js vue 学习日记十一父子组件互相栏目 JavaScript 繁體版

原文原文链接

上节回顾

上节我用element-ui 与 vue-router 实现了页面跳转的功能。vue

回想一下，vue-router实现组件之间的切换关键也就俩东西，一个router-link一个router-view，因此说整体来讲上一节也没学啥。vue-router

本节目标

props父组件向子组件传值element-ui

$emit子组件向父组件传值ui

基于上一节的例子，脑子里构思了一个点击table的row，弹出框显示本行信息这样一个画面this

1.建立表单弹出框

要点：spa

props: ['student']告诉父组件我（弹出框组件）须要一个student
this.$emit('confirm', this.form)触发父组件中，弹出框组件上定义的confirm事件，并将this.form传递过去

student-list-info组件完整代码：3d

<template>
  <div>
    <el-button icon="el-icon-more" @click="dialogFormVisible = true" circle></el-button>
    <el-dialog title="查询" :visible.sync="dialogFormVisible">
      <el-form :model="student">
        <el-form-item label="姓名">
          <el-input v-model="student.name"></el-input>
        </el-form-item>
        <el-form-item label="性别">
          <el-input v-model="student.sex"></el-input>
        </el-form-item>
        <el-form-item label="年龄">
          <el-input v-model.number="student.age" type="number"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="doConfirm(student)">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'student-list-info',
  props: ['student'],
  data () {
    return {
      dialogFormVisible: false
    }
  },
  methods: {
    doConfirm (student) {
      this.$emit('confirm', student)
      this.dialogFormVisible = false
    }
  }
}
</script>

<style scoped>

</style>

2.将弹出框引入List页面

student-list页面须要注意的只有这里：
<student-list-info style="float: left" @confirm="onConfirm" :student="this.student"></student-list-info>code

:student：中的student对应props: ['student']中的studentcomponent

@confirm：@后面的confirm对应this.$emit('confirm', this.form)中的confirmorm

完整代码：

<template>
  <div>
    <el-row>
    <student-list-info style="float: left" @confirm="onConfirm" :student="this.student"></student-list-info>
    </el-row>
    <hr>
    <h3>学员列表</h3>
  <el-table
    :data="tableData"
    @row-click="onRowClick"
    border
    stripe
    style="width: 100%">
    <el-table-column
      prop="name"
      label="姓名"
      width="180">
    </el-table-column>
    <el-table-column
      prop="sex"
      label="性别"
      width="180">
    </el-table-column>
    <el-table-column
      prop="age"
      label="年龄">
    </el-table-column>
  </el-table>
  </div>
</template>

<script>
import studentListInfo from './student-list-info'

export default {
  name: 'student-list',
  components: {
    studentListInfo
  },
  data () {
    return {
      tableData: [{
        name: '张楚岚',
        sex: '男',
        age: '23'
      },
      {
        name: '冯宝宝',
        sex: '女',
        age: '99'
      },
      {
        name: '赵方旭',
        sex: '男',
        age: '59'
      },
      {
        name: '肖自在',
        sex: '男',
        age: '36'
      }
      ],
      student: {
        name: '',
        sex: '',
        age: 0
      }
    }
  },

  methods: {
    onConfirm (item) {
      this.tableData.push(item)
    },
    onRowClick (row) {
      this.student = {
        name: row.name,
        sex: row.sex,
        age: row.age
      }
    }
  }
}
</script>

<style scoped>

</style>