npm install ‘file-saver‘
npm install ‘xlsx‘

import FileSaver from ‘file-saver‘
import XLSX from ‘xlsx‘

exportForms(){
            let xlsxParam = {raw:true};
            let wb = XLSX.utils.table_to_book(document.querySelector("#outTable"),xlsxParam);
            //outtable是表格对应的id
            let wbout = XLSX.write(wb,{
                bookType:"xlsx",
                bookSST:true,
                type:"array"
            })
            try{
                FileSaver.saveAs(
                    new Blob([wbout],{type:"application/octet-stream;charset=utf-8"}),
                    "数据详情.xlsx"   //导出的文件名称
                )
            }catch (e) {
                if(typeof  console !== "undefined"){
                    console.log(e,wbout)
                }
            }
            return wbout;
        }