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elementPuls 表格反选实现

news 来源：原创 2024/9/20 15:35:54

真的在网上搜了很多资料发现根本实现不了反选 最下面有示例
然后去看了下官网
发现官网有教你怎么选中某个值的方法官网中的”多选“
官网地址

<template><el-tableref="multipleTableRef":data="tableData"style="width: 100%"@selection-change="handleSelectionChange"><el-table-column type="selection" width="55" /><el-table-column label="Date" width="120"><template #default="scope">{{ scope.row.date }}</template></el-table-column><el-table-column property="name" label="Name" width="120" /><el-table-column property="address" label="Address" /></el-table><div style="margin-top: 20px"><el-button @click="toggleSelection([tableData[1], tableData[2]])">Toggle selection status of second and third rows</el-button><el-button @click="toggleSelection()">Clear selection</el-button></div>
</template><script lang="ts" setup>
import { ref } from 'vue'
import { ElTable } from 'element-plus'interface User {date: stringname: stringaddress: string
}const multipleTableRef = ref<InstanceType<typeof ElTable>>()
const multipleSelection = ref<User[]>([])
const toggleSelection = (rows?: User[]) => {if (rows) {rows.forEach((row) => {// TODO: improvement typing when refactor table// eslint-disable-next-line @typescript-eslint/ban-ts-comment// @ts-expect-errormultipleTableRef.value!.toggleRowSelection(row, undefined)})} else {multipleTableRef.value!.clearSelection()}
}
const handleSelectionChange = (val: User[]) => {multipleSelection.value = val
}const tableData: User[] = [{date: '2016-05-03',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-02',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-04',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-01',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-08',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-06',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},{date: '2016-05-07',name: 'Tom',address: 'No. 189, Grove St, Los Angeles',},
]
</script>

既然官网有办法选中某个值
那反选是不是简单了很多
以下是个人代码
第一步获取已选中的值和未选中的值

<el-tableref="multipleTableRef":data="tableData"style="width: 100%"绑定切换选中时候的数据@selection-change="handleSelectionChange"></el-table><div @click="invertSelection(state.noCheckList)"style="width: 114rem;height: 35rem;border: 1rem solid #9D9D9D;border-radius: 10rem;font-size: 15rem;color: #5C6170;display: flex;align-items: center;margin: 0 20rem;cursor: pointer;"><img style="height: 15rem;margin: 0 10rem 0 15rem;" src="../../../assets/选择-反向选择@2x.png"alt="" srcset=""><span>反向选择</span></div>
<script setup>
let state = reactive({peopleList:[],//总数据checkList: [],//选中数据数组noCheckList:[],//未选中数据数组
})
// 重要 获取选中未选中数据
const handleSelectionChange = (val) => {console.log(val);state.checkList = valconst notIncludedArray = state.peopleList.filter(item => !val.includes(item));state.noCheckList = notIncludedArray// console.log(notIncludedArray);
}
const multipleTableRef= ref() // 多选table
const invertSelection = (rows) => {// rows  需要选中的数据  直接传进 state.noCheckList 即可multipleTableRef.value.clearSelection()  //需要先全部取消选中  再去选中刚刚未选中的数据即可if (rows) {rows.forEach((row) => {multipleTableRef.value.toggleRowSelection(row, undefined)})} else {multipleTableRef.value.clearSelection()}
}</script>