详解Vue Elementui中的Tag与页面其它元素相互交互的两三事

<template>
 <div>
 <el-row type="flex" justify="bettwen">
  <el-col :span="15">
  <!-- 表单 -->
  <el-form :model="tempForm" ref="tempForms">
   <el-form-item label="请选择人员">
   <!-- 多选人员 -->
   <el-checkbox-group v-model="tempForm.checkboxGroup5" size="small">
    <el-checkbox border v-for="(item,index) in checkBox" @change="perChange(item)" :label="item.id" :key="index">{{item.name}}</el-checkbox>
   </el-checkbox-group>
   <!-- 多选人员 end-->
   </el-form-item>
  </el-form>
  <!-- 表单 end-->
  <!-- tag展示区 -->
  <el-row>
   <el-tag class="tagClass" v-for="(tag,index) in tags" :key="index" closable @close="handleClose(tag)" :type="tag.id">
   {{tag.name}}
   </el-tag>
   <el-button v-if="tags.length>0" @click="clearAll" plain>全部删除</el-button>
  </el-row>
  <!-- tag展示区 end-->
  </el-col>
  
 </el-row>
 </div>
</template>
<script>
export default {
 name: 'kk',
 mounted() {},
 data() {
 return {
  msg: 'Welcome to Your Vue.js App',
  tags: [],
  tempForm: {
  checkboxGroup5: [], //选择的人员
  },
  detailData: [],
  checkBox: [{
   name: '小红',
   id: '101'
  },
  {
   name: '小黄',
   id: '100'

  }, {
   name: '小明',
   id: '102'

  }, {
   name: '小明',
   id: '102'

  }
  ],
  
 }
 },
 methods: {
 clearAll() { //全部清空数据
  this.tags = []
  this.tempForm.checkboxGroup5 = []
 },
 perChange(item) {
  this.detailData.push(item)
 },
 handleClose(tag) { //标签的删除事件
  // 去掉当前删除的tag
  let yourChoseTags = this.tempForm.checkboxGroup5

  this.tempForm.checkboxGroup5 = yourChoseTags.filter(item => {
  if (tag.id !== item) {
   return true
  }
  })

  
 },
 delRepeat(arr) { //数组对象去重
  return Object.values(
  arr.reduce((obj, next) => {
   var key = JSON.stringify(next);
   return (obj[key] = next), obj;
  }, {}),
  );
 },
 moreArr() {
  let yourChose = this.tempForm.checkboxGroup5
  let tempTags = []

  tempTags = this.baseDataDetail(yourChose, this.checkBox, tempTags)
  this.detailData = tempTags
 },
 baseDataDetail(yourChose, baseData, callBack) { //封装的数组方法
  let temp = callBack
  // 循环两个数据拿到选择的checkbox的id对应的初始数据
  yourChose.forEach(item => {
  baseData.forEach(itemSecond => {
   if (item === itemSecond.id) {
   temp.push(itemSecond)
   }
  })
  })
  return temp
 },

 },
 watch: {
 detailData() {
  let tempArr = Object.assign([], this.detailData)
  tempArr = this.delRepeat(tempArr)
  // console.log(tempArr)
  this.tags = tempArr
 },
 "tempForm.checkboxGroup5" () {
  this.moreArr()
 },
 }
}

</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.tempArea {
 /*width: 100%;*/
}
.tagClass{
 margin-right: 10px;
}

</style>