vue中el-checkbox全選、反選、多選的實現(xiàn)

更新時間：2023年05月16日 16:29:39 作者：粽子師兄

這篇文章主要介紹了vue中el-checkbox全選、反選、多選的實現(xiàn)方式，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

vue el-checkbox全選、反選、多選

描述：實現(xiàn)對一組數(shù)據(jù)進行全選，反選、多選操作

全選

handleCheckAllChange(val) {
  this.checkedCities = val ? cityOptions : [];
  this.isIndeterminate = false;
  this.checkInvert = false;
}

反選

handleInvertCheckChange(val) {
  let cities = this.cities;
  let checkedCities = this.checkedCities;
  if (checkedCities.length === 0) {
    checkedCities = val ? cities : [];
  } else if (checkedCities.length === cities.length) {
    this.checkedCities = [];
    this.checkAll = false;
  } else {
    let list = cities.concat(checkedCities).filter((v, i, array) => {
      return array.indexOf(v) === array.lastIndexOf(v);
    });
    this.checkedCities = list;
  }
}

多選

handleCheckedCitiesChange(value) {
  let checkedCount = value.length;
  this.checkAll = checkedCount === this.cities.length;
  this.isIndeterminate =
    checkedCount > 0 && checkedCount < this.cities.length;
  this.checkInvert = false;
}

完整代碼

<template>
  <div>
    <el-checkbox
      v-model="checkAll"
      @change="handleCheckAllChange"
      :indeterminate="isIndeterminate"
      >全選</el-checkbox
    >
    <el-checkbox v-model="checkInvert" @change="handleInvertCheckChange"
      >反選</el-checkbox
    >
    <el-checkbox-group
      v-model="checkedCities"
      @change="handleCheckedCitiesChange"
    >
      <el-checkbox v-for="city in cities" :label="city" :key="city">{{
        city
      }}</el-checkbox>
    </el-checkbox-group>
  </div>
</template>
<script>
const cityOptions = ["上海", "北京", "廣州", "深圳"];
export default {
  data() {
    return {
      checkAll: false,
      checkInvert: false,
      checkedCities: ["上海", "北京"],
      cities: cityOptions,
      isIndeterminate: true,
    };
  },
  methods: {
    // 全選
    handleCheckAllChange(val) {
      this.checkedCities = val ? cityOptions : [];
      this.isIndeterminate = false;
      this.checkInvert = false;
    },
    // 反選
    handleInvertCheckChange(val) {
      let cities = this.cities;
      let checkedCities = this.checkedCities;
      if (checkedCities.length === 0) {
        checkedCities = val ? cities : [];
      } else if (checkedCities.length === cities.length) {
        this.checkedCities = [];
        this.checkAll = false;
      } else {
        let list = cities.concat(checkedCities).filter((v, i, array) => {
          return array.indexOf(v) === array.lastIndexOf(v);
        });
        this.checkedCities = list;
      }
    },
    // 多選
    handleCheckedCitiesChange(value) {
      let checkedCount = value.length;
      this.checkAll = checkedCount === this.cities.length;
      this.isIndeterminate =
        checkedCount > 0 && checkedCount < this.cities.length;
      this.checkInvert = false;
    },
  },
};
</script>
<style>
</style>

checkbox多選框，indeterminate 狀態(tài)

舉個例子。比如選擇星期。一周七天

2種方法。思密達。。。。第一種帶局限性。笨辦法，也發(fā)出來大家看看（推薦使用第二種）

這是方式的值是組件自帶的值方式

const cityOptions = ['周一', '周二', '周三', '周四','周五','周六','周天']

<template>
? <div>
? ? <el-checkbox :indeterminate="isIndeterminate" v-model="checkAll" @change="handleCheckAllChange">全選</el-checkbox>
? ? <div style="margin: 15px 0;"></div>
? ? <el-checkbox-group v-model="checkedCities" @change="handleCheckedCitiesChange">
? ? ? <el-checkbox v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox>
? ? </el-checkbox-group>
? </div>
</template>
<script>
? const cityOptions = ['周一', '周二', '周三', '周四','周五','周六','周天']
? export default {
? ? data() {
? ? ? return {
? ? ? ? checkAll: false,
? ? ? ? checkedCities: [],
? ? ? ? cities: cityOptions,
? ? ? ? isIndeterminate: true,
? ? ? ? arr:[]
? ? ? }
? ? },
? ? methods: {
? ? ? handleCheckAllChange(val) {
? ? ? ? let tempArr = []
? ? ? ? this.checkedCities = val ? cityOptions : []
? ? ? ? this.isIndeterminate = false
? ? ? ? // console.log(this.checkedCities)
? ? ? ? // console.log(val)
? ? ? ? if (this.checkedCities != []) {
? ? ? ? ? ? ? if(val == true){
? ? ? ? ? ? ? ? tempArr = [1,2,3,4,5,6,0]
? ? ? ? ? ? ? ? this.arr = tempArr
? ? ? ? ? ? ? }else if(val==false){
? ? ? ? ? ? ? ? tempArr = []
? ? ? ? ? ? ? ? this.arr = tempArr
? ? ? ? ? }
? ? ? ? }
? ? ? ? console.log(this.arr)
? ? ? },
? ? ? handleCheckedCitiesChange(value) {
? ? ? ? let checkedCount = value.length;
? ? ? ? this.checkAll = checkedCount === this.cities.length;
? ? ? ? this.isIndeterminate = checkedCount > 0 && checkedCount < this.cities.length;
? ? ? ? var tempArr = []
? ? ? ? for(let i=0;i<value.length;i++){
? ? ? ? ? if(value[i] === '周一') {
? ? ? ? ? ? tempArr.push(1)
? ? ? ? ? }else if(value[i] === '周二'){
? ? ? ? ? ? tempArr.push(2)
? ? ? ? ? }else if(value[i] === '周三'){
? ? ? ? ? ? tempArr.push(3)
? ? ? ? ? }else if(value[i] === '周四'){
? ? ? ? ? ? tempArr.push(4)
? ? ? ? ? }else if(value[i] === '周五'){
? ? ? ? ? ? tempArr.push(5)
? ? ? ? ? }else if(value[i] === '周六'){
? ? ? ? ? ? tempArr.push(6)
? ? ? ? ? }else if(value[i] === '周天'){
? ? ? ? ? ? tempArr.push(0)
? ? ? ? ? }
? ? ? ? }
? ? ? ? this.arr = tempArr
? ? ? ? console.log(this.arr)
? ? ? }
? ? }
? }
</script>
<style scoped>
</style>

之后UP想了一下。不對。后臺反過來的數(shù)組不應(yīng)該是這種。大部分都應(yīng)該是obj的形式

于是乎。

const cityOptions = [{a:'周一',b:1}, {a:'周二',b:2}, {a:'周三',b:3},{a:'周四',b:4},{a:'周五',b:5},{a:'周六',b:6},{a:'周天',b:7}];

對吧這種形式才對。說不定可能有很多很多。萬一叫你把一個月都列出來也說不定。

繼續(xù)上代碼

<template>
? ? <div style="height: 1000px">
? ? ? <el-checkbox :indeterminate="isIndeterminate" v-model="checkAll" @change="handleCheckAllChange">全選</el-checkbox>
? ? ? <div style="margin: 15px 0;"></div>
? ? ? <el-checkbox-group v-model="checkedCities" @change="handleCheckedCitiesChange">
? ? ? ? <el-checkbox v-for="city in cities" :label="city.b" :key="city.b">{{city.a}}</el-checkbox>
? ? ? </el-checkbox-group>
? ? </div>
</template>
<script>
? const cityOptions = [{a:'周一',b:1}, {a:'周二',b:2}, {a:'周三',b:3},{a:'周四',b:4},{a:'周五',b:5},{a:'周六',b:6},{a:'周天',b:7}];
? export default {
? ? name: "tourSpecialEdition",
? ? components: {},
? ? data(){
? ? ? return{
? ? ? ? checkAll: false,
? ? ? ? checkedCities: [],
? ? ? ? cities: cityOptions,
? ? ? ? isIndeterminate: false
? ? ? }
? ? },
? ? created() {},
? ? mounted() {},
? ? methods: {
? ? ? handleCheckAllChange(val) {
? ? ? ? const arr = val ? cityOptions : [];
? ? ? ? this.checkedCities = [];
? ? ? ? arr.map(item => {
? ? ? ? ? this.checkedCities.push(item.b);
? ? ? ? ? console.log(this.checkedCities.sort())
? ? ? ? });
? ? ? ? this.isIndeterminate = false;
? ? ? },
? ? ? handleCheckedCitiesChange(value) {
? ? ? ? let arrTime = value
? ? ? ? this.checkedCities = arrTime
? ? ? ? console.log(this.checkedCities.sort())
? ? ? ? let checkedCount = value.length;
? ? ? ? this.checkAll = checkedCount === this.cities.length;
? ? ? ? this.isIndeterminate = checkedCount > 0 && checkedCount < this.cities.length;
? ? ? }
? ? }
? }
</script>
<style scoped>
</style>