Posted in Javascript onJune 29, 2020
本文实例为大家分享了element跨分页操作选择的具体代码,供大家参考,具体内容如下
业务需求:在批量导出或者批量删除的时候会涉及到跨分页导出或者批量删除,这是你会发现,当你选择后点击分页,发现之前选择的数据已经没有了,现在就是要满足分页点击分页后原始数据保留
<template> <div> <el-table :data="tableData" tooltip-effect="dark" style="width: 100%;" header-align="left" border ref="table" row-key="serviceDateId" @selection-change="handleSelectionChange" @row-dblclick="toDetail" @sort-change="sortChange" > <el-table-column type="selection" el-table-column width="50" fixed="left"></el-table-column> <el-table-column label="序号" width="80" fixed="left"> <template slot-scope="{row,$index}"> <span>{{$index + 1}}</span> </template> </el-table-column> <el-table-column label="服务日期" prop="serviceDate" sortable="custom" min-width="120" ></el-table-column> <el-table-column label="服务对象" prop="vsoName" min-width="120"></el-table-column> <el-table-column label="身份证号" prop="idCard" sortable="custom" min-width="200"></el-table-column> <el-table-column label="服务内容" prop="serviceContentName" min-width="200"></el-table-column> <el-table-column label="服务结果" prop="serviceResultName" min-width="100"></el-table-column> <el-table-column label="志愿者" prop="volunteerName" sortable="custom" min-width="120" show-overflow-tooltip></el-table-column> <el-table-column label="志愿者所属组织" prop="objName" min-width="200" show-overflow-tooltip></el-table-column> <el-table-column fixed="right" label="操作" width="150" header-align="center"> <template slot-scope="{row,$index}"> <span @click="handleEdit(row)" class="table-btn" v-has="{class: '编辑'}">编辑</span> <span @click="handleRemove($index, row)" class="table-btn" v-has="{class: '删除'}">删除</span> </template> </el-table-column> </el-table> <pagination v-show="total>0" :total="total" :page.sync="form.pageNum" :limit.sync="form.pageSize" @pagination="getData(form)" /> </div> </template> <script> export default { data(){ return{ ruleForm: { username: '', password:'' }, form: { pageNum: 1, // 分页页数 pageSize: 10, // 分页数量 }, multipleSelection: [], //多选的行数据 multipleSelectionAll:[],// 当前页选中的数据 idKey: 'idCard', } }, methods: { setSelectRow() { if (!this.multipleSelectionAll || this.multipleSelectionAll.length <= 0) { return; } // 标识当前行的唯一键的名称 let idKey = this.idKey; let selectAllIds = []; let that = this; this.multipleSelectionAll.forEach(row=>{ selectAllIds.push(row[idKey]); }) this.$refs.table.clearSelection(); for(var i = 0; i < this.tableData.length; i++) { if (selectAllIds.indexOf(this.tableData[i][idKey]) >= 0) { // 设置选中,记住table组件需要使用ref="table" this.$refs.table.toggleRowSelection(this.tableData[i], true); } } }, // 记忆选择核心方法 changePageCoreRecordData () { // 标识当前行的唯一键的名称 let idKey = this.idKey; let that = this; //如果总记忆中还没有选择的数据,那么就直接取当前页选中的数据,不需要后面一系列计算 if (!this.multipleSelectionAll.length) { this.multipleSelectionAll = this.multipleSelection; return; } // 总选择里面的key集合 let selectAllIds = []; this.multipleSelectionAll.forEach(row=>{ selectAllIds.push(row[idKey]); }) let selectIds = [] // 获取当前页选中的id this.multipleSelection.forEach(row=>{ selectIds.push(row[idKey]); // 如果总选择里面不包含当前页选中的数据,那么就加入到总选择集合里 if (selectAllIds.indexOf(row[idKey]) < 0) { that.multipleSelectionAll.push(row); } }) let noSelectIds = []; // 得到当前页没有选中的id this.tableData.forEach(row=>{ if (selectIds.indexOf(row[idKey]) < 0) { noSelectIds.push(row[idKey]); } }) noSelectIds.forEach(id=>{ if (selectAllIds.indexOf(id) >= 0) { for(let i = 0; i< that.multipleSelectionAll.length; i ++) { if (that.multipleSelectionAll[i][idKey] == id) { // 如果总选择中有未被选中的,那么就删除这条 that.multipleSelectionAll.splice(i, 1); break; } } } }) }, // 多选的行数据 handleSelectionChange(val) { this.multipleSelection = val setTimeout(()=>{ this.changePageCoreRecordData(); }, 50) }, // 获取表格数据 getData(form) { let parmas = _.cloneDeep(form); parmas.liveArea = typeof(parmas.liveArea) === 'object'?parmas.liveArea.join(''):parmas.liveArea; recordSearch(form).then(res => { if (res.rows) { this.tableData = res.rows; this.total = res.total; this.exportData = _.cloneDeep(form); setTimeout(()=>{ this.setSelectRow(); }, 50) } else { this.tableData = []; this.total = 0; } }) } }, mounted(){ this.getData(this.form) } } </script> <style lang="sass" scoped> </style>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持三水点靠木。
element跨分页操作选择详解
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