Vue项目中el-table导出Excel过程

npm install --save xlsx file-saver

import FileSaver from 'file-saver'
import XLSX from 'xlsx'
Vue.prototype.$FileSaver = FileSaver; //设置全局
Vue.prototype.$XLSX = XLSX; //设置全局

<el-table
    id="out-table"
    :header-cell-style="{
    background: 'rgba(245,248,253,1)',
    color: '#554'
    }"
    :row-style="{ height: '30px' }"
    :cell-style="{ padding: '0px'}"
    border
    :data="tableData"
    v-loading="loading"
    stripe
>
<el-table>

<el-button
    size="small"
    type="primary"
    icon="el-icon-download"
    @click="exportData"
>导出</el-button>

methods: {
    //导出功能
    exportData(){
      let excelName = '导出表格名称.xlsx';
      var xlsxParam = { raw: true };//转换成excel时，使用原始的格式
      // 克隆节点
      let tables = document.getElementById("out-table").cloneNode(true);
      // 判断是否为固定列，解决（为固定列时，会重复生成表格）
      if (tables.querySelector('.el-table__fixed') !== null) {
        tables.removeChild(tables.querySelector('.el-table__fixed'))
      }
      let table_book = this.$XLSX.utils.table_to_book(tables,xlsxParam);
      var table_write = this.$XLSX.write(table_book, {
          bookType: "xlsx",
          bookSST: true,
          type: "array"
      });
      try {
          this.$FileSaver.saveAs(
              new Blob([table_write], { type: "application/octet-stream" }),
              excelName
          );
      } catch (e) {
          if (typeof console !== "undefined") console.log(e, table_write);
      }
      return table_write;
      
    }
}