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js_export_excel
/
export2Excel.js

/* eslint-disable */
let idTmr;
const getExplorer = () => {
  let explorer = window.navigator.userAgent;
  //ie
  if (explorer.indexOf("MSIE") >= 0) {
    return 'ie';
  }
  //firefox

  else if (explorer.indexOf("Firefox") >= 0) {
    return 'Firefox';
  }
  //Chrome
  else if (explorer.indexOf("Chrome") >= 0) {
    return 'Chrome';
  }
  //Opera
  else if (explorer.indexOf("Opera") >= 0) {
    return 'Opera';
  }
  //Safari
  else if (explorer.indexOf("Safari") >= 0) {
    return 'Safari';
  }
}
// 判断浏览器是否为IE
const exportToExcel = (data,name) => {

  // 判断是否为IE
  if (getExplorer() == 'ie') {
    tableToIE(data, name)
  } else {
    tableToNotIE(data,name)
  }
}

const Cleanup = () => {
  window.clearInterval(idTmr);
}

// ie浏览器下执行
const tableToIE = (data, name) => {
  let curTbl = data;
  let oXL = new ActiveXObject("Excel.Application");

  //创建AX对象excel
  let oWB = oXL.Workbooks.Add();
  //获取workbook对象
  let xlsheet = oWB.Worksheets(1);
  //激活当前sheet
  let sel = document.body.createTextRange();
  sel.moveToElementText(curTbl);
  //把表格中的内容移到TextRange中
  sel.select;
  //全选TextRange中内容
  sel.execCommand("Copy");
  //复制TextRange中内容
  xlsheet.Paste();
  //粘贴到活动的EXCEL中

  oXL.Visible = true;
  //设置excel可见属性

  try {
    let fname = oXL.Application.GetSaveAsFilename("Excel.xls", "Excel Spreadsheets (*.xls), *.xls");
  } catch (e) {
    print("Nested catch caught " + e);
  } finally {
    oWB.SaveAs(fname);

    oWB.Close(savechanges = false);
    //xls.visible = false;
    oXL.Quit();
    oXL = null;
    // 结束excel进程，退出完成
    window.setInterval("Cleanup();", 1);
    idTmr = window.setInterval("Cleanup();", 1);
  }
}

// 非ie浏览器下执行
const tableToNotIE = (function() {
  // 编码要用utf-8不然默认gbk会出现中文乱码
  let uri = 'data:application/vnd.ms-excel;base64,',
    template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><meta charset="UTF-8"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>',
    base64 = function(s) {
      return window.btoa(unescape(encodeURIComponent(s)));

    },

    format = (s, c) => {
      return s.replace(/{(\w+)}/g,
        (m, p) => {
          return c[p];
        })
    }
  return (table, name) => {
    let ctx = {
      worksheet: name,
      table
    }
    //创建下载
    let link = document.createElement('a');
    link.setAttribute('href', uri + base64(format(template, ctx)));

    link.setAttribute('download', name);


    // window.location.href = uri + base64(format(template, ctx))
    link.click();
  }
})()

// 导出函数
const export2Excel = (theadData, tbodyData, dataname) => {

  let re = /http/ // 字符串中包含http,则默认为图片地址
  let th_len = theadData.length // 表头的长度
  let tb_len = tbodyData.length // 记录条数
  let width = 50 // 设置图片大小
  let height = 60

  // 添加表头信息
  let thead = '<thead><tr>'
  for (let i = 0; i < th_len; i++) {
    let thObj =  theadData[i].indexOf("</th>")==-1?('<th>' + theadData[i] + '</th>'):theadData[i];
    thead += thObj
  }
  thead += '</tr></thead>'
  // 添加每一行数据
  let tbody = '<tbody>'
  for (let i = 0; i < tb_len; i++) {
    tbody += '<tr>'
     // 获取每一行的数据 和 自定义数据
    let row = tbodyData[i];
    for (let key in row) {
      if (re.test(row[key])) { // 如果为图片，则需要加div包住图片
        //
        tbody += '<td style="width:' + width + 'px; height:' + height + 'px; text-align: center; vertical-align: middle"><div style="display:inline"><img src=\'' + row[key] + '\' ' + ' ' + 'width=' + '\"' + width + '\"' + ' ' + 'height=' + '\"' + height + '\"' + '></div></td>'
      } else {
        let tdObj = row[key].indexOf("</td>")==-1?("<td align='center'>"+row[key]+"</td>"):row[key];
        tbody +=tdObj;
      }
    }
    tbody += '</tr>'
  }
  tbody += '</tbody>'
  console.log(tbody,thead);
  let table = thead + tbody
  // 导出表格
  exportToExcel(table, dataname)
}