vue excel上传预览和table内容下载到excel文件中

import XLSX from "xlsx";
import FileSaver from "file-saver";

downBtn() {
 // 获取table的dom元素
 let vv = XLSX.utils.table_to_book(document.getElementById("tableExcel"));
 let vbouts = XLSX.write(vv, {
  bookType: "xlsx",
  bookSST: true,
  type: "array"
 });
 try {
  FileSaver.saveAs(
   // 这是下载的excel文件名 
   new Blob([vbouts], { type: "application/octet-stream" }),
   "员工表.xlsx"
  );
 } catch (e) {
  if (typeof console !== "undefined") console.log(e, vbouts);
 }
 return vbouts;
}