将HTML表格导出到EXCEL，兼容Firefox，支持中文

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>HTML表格导出到EXCEL</title>
<script type="text/javascript" language="javascript">
var idTmr;
function getExplorer()
{
    var 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';
    }
}
function table2excel(tableid)
{ //整个表格拷贝到EXCEL中
    if (getExplorer() == 'ie')
    {
        var curTbl = document.getElementById(tableid);
        var oXL = new ActiveXObject("Excel.Application");

        //创建AX对象excel
        var oWB = oXL.Workbooks.Add();
        //获取workbook对象
        var xlsheet = oWB.Worksheets(1);
        //激活当前sheet
        var 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
        {
            var 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);

        }

    }
    else
    {
        tableToExcel(tableid)
    }
}
function Cleanup()
{
    window.clearInterval(idTmr);
    CollectGarbage();
}
var tableToExcel = (function ()
{
    var uri = 'data:text/xls;charset=utf-8,\ufeff,',
    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><!--[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(encodeURIComponent(s))
    },
    format = function (s, c)
    {
        return s.replace(/{(\w+)}/g,
            function (m, p)
        {
            return c[p];
        }
        )
    }
    return function (table, name)
    {
        if (!table.nodeType)
            table = document.getElementById(table)
                var ctx =
            {
                worksheet : name || 'Worksheet',
                table : table.innerHTML
            }
        //window.location.href = uri + base64(format(template, ctx))

        var downloadLink = document.createElement("a");
        downloadLink.href = uri + format(template, ctx);
        downloadLink.download = '统计.xls';
        document.body.appendChild(downloadLink);
        downloadLink.click();
        document.body.removeChild(downloadLink);
    }
}
)()

</script>

</head>
<body>
  <table id="targetTable" cellpadding="0" cellspacing="0" border="1">
    <tr align="center">
      <th>第一列</th>
      <th>第二列</th>
      <th>第三列</th>
    </tr>
    <tr align="center">
      <td>a</td>
      <td>b</td>
      <td rowspan="2" style="border:0">
        <table width="100%" cellpadding="0" cellspacing="0" border="1">
          <tr>
            <td>1</td>
            <td>2</td>
          </tr>
          <tr>
            <td rowspan="2">3</td>
            <td>4</td>
          </tr>
          <tr>
            <td>5</td>
          </tr>
        </table>
      </td>
    </tr>
    <tr align="center">
      <td>c</td>
      <td>d</td>
    </tr>
  </table>
</br>
<input id="Button1" type="button" value="导出EXCEL" onclick="javascript:table2excel('targetTable')" />
</body>
</html>