vue + element +table 纯前端导出excel（导出当前页数的列表数据）

1、安装插件

npm install file-saver --save
npm install xlsx --save

2、使用（方法二只用安装 xlsx 就可以导出数据）
方法一：

<template>
  <div>
  	 <el-button size="mini" class="none-radius" @click="handleExport">导出</el-button>
	 <el-table id="exportTable" :data="tableData" style=" 100%">
 		<el-table-column prop="userName" label="姓名" width="150" align="center" :show-overflow-tooltip="true"></el-table-column>
        <el-table-column prop="sex" label="性别" width="70" align="center" :show-overflow-tooltip="true">
          <template slot-scope="scope">{{scope.row.sex | sexList}}</template>
        </el-table-column>
        ...
	</el-table>
  </div> 
</template>
<script>
import FileSaver from 'file-saver'
import XLSX from 'xlsx'
export default {
  methods() {
    handleExport() {
      this.$confirm('该操作将导出所有列表数据，是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        let exportTable = XLSX.utils.table_to_book(document.querySelector('#exportTable'))
        let exportTableOut = XLSX.write(exportTable, { bookType: 'xlsx', bookSST: true, type: 'array' })
        try {
          FileSaver.saveAs(new Blob([exportTableOut], { type: 'application/octet-stream' }), '表格名称.xlsx')
        } catch (e) { if (typeof console !== 'undefined') console.log(e, exportTableOut) }
        return exportTableOut;

      }).catch(() => { });
    },
  }
}

方法二：

<template>
  <div>
  	 <el-button size="mini" class="none-radius" @click="handleExport">导出</el-button>
	 <el-table id="exportTable" :data="tableData" style=" 100%">
 		<el-table-column prop="userName" label="姓名" width="150" align="center" :show-overflow-tooltip="true"></el-table-column>
        <el-table-column prop="sex" label="性别" width="70" align="center" :show-overflow-tooltip="true">
          <template slot-scope="scope">{{scope.row.sex | sexList}}</template>
        </el-table-column>
        ...
	</el-table>
  </div> 
</template>

<script>
import XLSX from 'xlsx'
export default {
 methods: {
  handleExport() {
      this.$confirm('该操作将导出选中的列表数据，是否继续', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        //导出
        let table = document.getElementById('exportTable');
        let worksheet = XLSX.utils.table_to_sheet(table);
        let workbook = XLSX.utils.book_new();
        XLSX.utils.book_append_sheet(workbook, worksheet, 'sheet');
        try {
          XLSX.writeFile(workbook, '文档ll.xlsx');
        } catch (e) {
          console.log(e, workbook);
        }

      }).catch(() => { });

    },
   }
  }