element table切换分页不勾选的自带方法

场景一:没有回显勾选的情况

table表格加row-key标识选中行唯一标识,多选框加reserve-selection设置为true

<template>
 <el-table
    v-loading="loading"
    ref="multipleTable"
    tooltip-effect="dark"
    :row-key="getRowKey">
    <el-table-column label="" type="selection" width="50" align="center" :reserve-selection="true"></el-table-column>
 </table>
</template>
<script>
  methods: {
  // 指定一个key标识这一行的数据
    getRowKey (row) {
      return row.id
    }
  }
</script>

 场景二:有回显勾选情况

<template>
 <el-table v-loading="loading"
    ref="multipleTable"
    :data="tableData"
    @select="onTableSelect"
    @select-all="onTableSelectAll"
     tooltip-effect="dark">
<template>
<script type="text/javascript">
    methods: {
         // 取消默认选中项(单个勾选)
        /**
         *@list 接口返回的默认勾选数组
         *@id 列表唯一标识
         */ 
        onTableSelect (rows, row) {
          if (!rows.includes(row)) {
            const index = this.list.findIndex(item =>         
             item.id=== row.id)
                this.list.splice(index, 1)
          } else {
            this.list.push(row)
          }
        },
        // 全选操作
        onTableSelectAll (arr) {
          if (!arr.length) { // 直接取消选中全部
            this.tableData.forEach((v) => {
              const index = this.list.findIndex(i => 
                 i.id === v.id)
              if (index !== -1) {
                this.list.splice(index, 1)
              }
            })
          } else { // 直接选中全部
            this.tableData.forEach((v) => {
              const index = this.list.findIndex(i => 
                 i.id=== v.id)
              if (index === -1) {
                this.list.push(v)
              }
            })
          }
        }
    }
<script>
原文地址:https://www.cnblogs.com/adbg/p/11899324.html