下载
npm i / yarn add file-saver、xlsx库
引入
import FileSaver from “file-saver”;
import XLSX from “xlsx”;

const simexport = (data) => {
  // if (data.create_time && data.create_time.length > 0) {
  //   data.start_time = parseTime(data.create_time[0], "{y}-{m}-{d} ");
  //   data.end_time = parseTime(data.create_time[1], "{y}-{m}-{d} ");
  // }

//da.tableData时表格数据
  //fileName 导出文件名；idName 导出table的id；xlsxParam 导出配置
  if (da.tableData.length == 0) {
    ElMessage.error("暂无数据");
    return;
  }
  let xlsxParam = { raw: true }; // 导出的内容只做解析，不进行格式转换
  let wb = XLSX.utils.table_to_book(
    document.querySelector("#exportTab"),
    xlsxParam
  );
  let wbout = XLSX.write(wb, {
    bookType: "xlsx",
    bookSST: true,
    type: "array",
  });
  try {
    FileSaver.saveAs(
      new Blob([wbout], { type: "application/octet-stream" }),
      `${"小程序"}.xlsx`
    );
  } catch (e) {
    if (typeof console !== "undefined") {
      console.log(e, wbout);
    }
  }
  return wbout;
};

效果