//obj是table表格外面嵌套div id

function saveCode(obj) {

    try {

        var strHTML = obj.innerHTML;

        if (navigator.userAgent.indexOf("MSIE") > 0) //IE浏览器

        {

            var winname;

            winname = window.open("ToExcel", "_blank", 'top=10000');

            winname.document.open('text/html', 'replace');

            winname.document.write("<style>");

            winname.document.write("table{border:solid 1px #000;text-align:center;border-collapse:collapse; border-spacing:0;}");

            winname.document.write("table td{border:solid 1px #000;text-align:center;}");

            winname.document.write("table th{border:solid 1px #000;text-align:center;}");

            winname.document.write("</style>");

            winname.document.write(strHTML);

            winname.document.execCommand('SaveAs', '', 'excel.xls');

            document.execCommand("ClearAuthenticationCache");

            winname.close();

        } else { //Chrome 火狐 浏览器

            var str = getTblData("datalist", this); //"博客, 域名Blog \r\n  2Sjolzy.cn, 3.1;2 \r\n  123123,123123  \r\n 123,123"; 测试数据

            var uri = 'data:text/csv;charset=utf-8,' + encodeURIComponent(str);//要编码

            //创建a标签模拟点击下载

            var downloadLink = document.createElement("a");

            downloadLink.href = uri;

            downloadLink.download = "excel.csv";

            document.body.appendChild(downloadLink);

            downloadLink.click();

            document.body.removeChild(downloadLink);

        }

    } catch (e) {

        alert(e.Message);

        return false;

    }

    return false;

}

function getTblData(inTbl, inWindow) {

    var rows = 0;

    var tblDocument = document;

    tblDocument = eval(inWindow).document;

    var curTbl = tblDocument.getElementById(inTbl);

    var outStr = "";

    if (curTbl != null) {

        for (var j = 0; j < curTbl.rows.length; j++) {

            for (var i = 0; i < curTbl.rows[j].cells.length; i++) {

                if (i == 0 && rows > 0) {

                    outStr += ",";// \t";

                    rows -= 1;

                }

                outStr += curTbl.rows[j].cells[i].innerText + ",";//\t";

                if (curTbl.rows[j].cells[i].colSpan > 1) {

                    for (var k = 0; k < curTbl.rows[j].cells[i].colSpan - 1; k++) {

                        outStr += ",";// \t";

                    }

                }

                if (i == 0) {

                    if (rows == 0 && curTbl.rows[j].cells[i].rowSpan > 1) {

                        rows = curTbl.rows[j].cells[i].rowSpan - 1;

                    }

                }

            }

            outStr += "\r\n";

        }

    }

    else {

        outStr = null;

        alert(inTbl + "不存在 !");

    }

    return outStr;

}