js导出excel,修改table2excel源码支持导出的excel带边框

直接上代码，使用jquery+juqery.table2exce.js；

默认的table2excel导出的excel无边框，修改源码，支持边框，支持style

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title>html 表格导出道</title>
  <script src="jquery-1.6.4.min.js"></script>
  <script src="jquery.table2excel.min.js"></script>
  <script language="JavaScript" type="text/javascript">
    $(document).ready(function () {

        $("#tableExcel").table2excel({
          exclude : ".noExl", //过滤位置的 css 类名
          filename : "月度产品发货对账单" + new Date().getTime() + ".xls", //文件名称
          name: "Excel Document Name.xlsx",
          exclude_img: true,
          exclude_links: true,
          exclude_inputs: true,
		  preserveColors:true
        });
		window.close();
   
    });
  </script>
</head>

<body>
<p >
  <button type="button" id="btnExport" >导出Excel</button>
</p>
<table border=1 id="tableExcel">
<tr>
	<td colspan="7" align="center"   valign='center' style='border:none;'>月度产品发货对账单</td>
</tr>

<tr>
	<td colspan="7" align="left"   valign='left' >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;以下表格所列产品型号、数量、价格为武汉锐科光纤激光技术股份有限公司2022年2月1日至2月28日销售给贵公司产品，锐科已发货贵公司已签收，现烦请贵公司对表格内容核对无误后签章确认并按账期约定在2022年3月30日之前付清超期款。</td>
</tr>
<tr align="left" valign="left">
	<td colspan="7" align="left"   valign='left' >一、 发货明细</td>
</tr>
<tr>
<td  style="text-align:center;" width='79'>序号</td>
<td  style="text-align:center;"  width='90'>日期</td>
<td  style="text-align:center;"  width='120'>产品型号</td>
<td  style="text-align:center;"  width='90'>产品数量(台）</td>
<td  style="text-align:center;"  width='90'>产品单价  (万元)</td>
<td  style="text-align:center;"  width='90'>金额（万元）</td>
<td  style="text-align:center;"  width='120'>备注</td>
</tr>

<tr>
<td  style="text-align:center;">1</td>
<td  style="text-align:center;">2023-01-01</td>
<td  style="text-align:center;"></td>
<td  style="text-align:center;"></td>
<td  style="text-align:center;">111</td>
<td  style="text-align:center;">222</td>
<td  style="text-align:center;">333</td>
</tr>
<tr>
	<td colspan="5" align="left" valign="left">一、 发货汇总</td>
	<td class="noExl"></td>
	<td class="noExl"></td>
</tr>
<tr>
<td  style="text-align:center;">序号</td>
<td  style="text-align:center;">日期</td>
<td  style="text-align:center;">产品型号</td>
<td  style="text-align:center;">产品数量(台）</td>
<td  style="text-align:center;">产品单价  (万元)</td>
<td class="noExl"></td>
<td class="noExl"></td>
</tr>
<tr>
	<td colspan="5" align="left" valign="left">三、账务明细（金额：万元）</td>
	<td class="noExl"></td>
	<td class="noExl"></td>
</tr>
<tr>
<td  style="text-align:center;">序号</td>
<td  style="text-align:center;">日期</td>
<td  style="text-align:center;">产品型号</td>
<td  style="text-align:center;">产品数量(台）</td>
<td  style="text-align:center;">产品单价  (万元)</td>
<td class="noExl"></td>
<td class="noExl"></td>
</tr>
	
</table>
</body>
</html>

 table2excel.js

/*
 *  jQuery table2excel - v1.1.1
 *  jQuery plugin to export an .xls file in browser from an HTML table
 *  https://github.com/rainabba/jquery-table2excel
 *
 *  Made by rainabba
 *  Under MIT License
 *  
 *  添加功能：导出表格支持边框，支持style
 */
//table2excel.js
;(function ( $, window, document, undefined ) {
    var pluginName = "table2excel",

    defaults = {
        exclude: ".noExl",
        name: "Table2Excel",
        filename: "table2excel",
        fileext: ".xls",
        exclude_img: true,
        exclude_links: true,
        exclude_inputs: true
    };

    // The actual plugin constructor
    function Plugin ( element, options ) {
            this.element = element;
            // jQuery has an extend method which merges the contents of two or
            // more objects, storing the result in the first object. The first object
            // is generally empty as we don't want to alter the default options for
            // future instances of the plugin
            //
            this.settings = $.extend( {}, defaults, options );
            this._defaults = defaults;
            this._name = pluginName;
            this.init();
    }

    Plugin.prototype = {
        init: function () {
            var e = this;

            var utf8Heading = "<meta http-equiv=\"content-type\" content=\"application/vnd.ms-excel; charset=UTF-8\">";
            e.template = {
                head: "<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\">" + utf8Heading + "<head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets>",
                sheet: {
                    head: "<x:ExcelWorksheet><x:Name>",
                    tail: "</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet>"
                },
                mid: "</x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body>",
                table: {
                    head: "<table border='1'  width=686 style='border-bottom:none;border-left:none;border-right:none;border-top:none;'>",//表格边框
                    tail: "</table>"
                },
                foot: "</body></html>"
            };

            e.tableRows = [];

            // get contents of table except for exclude
            $(e.element).each( function(i,o) {
                var tempRows = "";
                $(o).find("tr").not(e.settings.exclude).each(function (i,p) {
					var align = $(p).attr("align")==null?"center":$(this).attr("align");
					var valign = $(p).attr("valign")==null?"center":$(this).attr("valign");
                    tempRows += "<tr align='"+align+"' valign='"+valign+"' >"; //文字居中
                    $(p).find("td,th").not(e.settings.exclude).each(function (i,q) { // p did not exist, I corrected

                        var rc = {
                            rows: $(this).attr("rowspan"),
                            cols: $(this).attr("colspan"),
							valign:$(this).attr("valign")==null?"center":$(this).attr("valign"),
							align:$(this).attr("align")==null?"center":$(this).attr("align"),
							width:$(this).attr("width")==null?"":$(this).attr("width"),
							style:$(this).attr("style")==null?"":$(this).attr("style"),
                            flag: $(q).find(e.settings.exclude)
                        };

                        if( rc.flag.length > 0 ) {
							console.log(rc.valign);
                            tempRows += "<td align='"+rc.align+"' valign='"+rc.valign+"' width="+rc.width+" style='"+rc.style+"'> </td>"; // exclude it!! //文字居中
                        } else {
                            tempRows += "<td align='"+rc.align+"' valign='"+rc.valign+"'  width='"+rc.width+"'  style='"+rc.style+"' "; //文字居中
                            if( rc.rows > 0) {
                                tempRows += " rowspan=\'" + rc.rows + "\' ";
                            }
                            if( rc.cols > 0) {
                                tempRows += " colspan=\'" + rc.cols + "\' ";
                            }
                            tempRows += "/>" + $(q).html() + "</td>";
                        }
                    });

                    tempRows += "</tr>";

                });
                // exclude img tags
                if(e.settings.exclude_img) {
                    tempRows = exclude_img(tempRows);
                }

                // exclude link tags
                if(e.settings.exclude_links) {
                    tempRows = exclude_links(tempRows);
                }

                // exclude input tags
                if(e.settings.exclude_inputs) {
                    tempRows = exclude_inputs(tempRows);
                }
                e.tableRows.push(tempRows);
            });

            e.tableToExcel(e.tableRows, e.settings.name, e.settings.sheetName);
        },

        tableToExcel: function (table, name, sheetName) {
            var e = this, fullTemplate="", i, link, a;

            e.format = function (s, c) {
                return s.replace(/{(\w+)}/g, function (m, p) {
                    return c[p];
                });
            };

            sheetName = typeof sheetName === "undefined" ? "Sheet" : sheetName;

            e.ctx = {
                worksheet: name || "Worksheet",
                table: table,
                sheetName: sheetName
            };

            fullTemplate= e.template.head;

            if ( $.isArray(table) ) {
                 Object.keys(table).forEach(function(i){
                      //fullTemplate += e.template.sheet.head + "{worksheet" + i + "}" + e.template.sheet.tail;
                      fullTemplate += e.template.sheet.head + sheetName + i + e.template.sheet.tail;
                });
            }

            fullTemplate += e.template.mid;

            if ( $.isArray(table) ) {
                 Object.keys(table).forEach(function(i){
                    fullTemplate += e.template.table.head + "{table" + i + "}" + e.template.table.tail;
                });
            }

            fullTemplate += e.template.foot;

            for (i in table) {
                e.ctx["table" + i] = table[i];
            }
            delete e.ctx.table;

            var isIE = /*@cc_on!@*/false || !!document.documentMode; // this works with IE10 and IE11 both :)
            //if (typeof msie !== "undefined" && msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))      // this works ONLY with IE 11!!!
            if (isIE) {
                if (typeof Blob !== "undefined") {
                    //use blobs if we can
                    fullTemplate = e.format(fullTemplate, e.ctx); // with this, works with IE
                    fullTemplate = [fullTemplate];
                    //convert to array
                    var blob1 = new Blob(fullTemplate, { type: "text/html" });
                    window.navigator.msSaveBlob(blob1, getFileName(e.settings) );
                } else {
                    //otherwise use the iframe and save
                    //requires a blank iframe on page called txtArea1
                    txtArea1.document.open("text/html", "replace");
                    txtArea1.document.write(e.format(fullTemplate, e.ctx));
                    txtArea1.document.close();
                    txtArea1.focus();
                    sa = txtArea1.document.execCommand("SaveAs", true, getFileName(e.settings) );
                }

            } else {
                var blob = new Blob([e.format(fullTemplate, e.ctx)], {type: "application/vnd.ms-excel"});
                window.URL = window.URL || window.webkitURL;
                link = window.URL.createObjectURL(blob);
                a = document.createElement("a");
                a.download = getFileName(e.settings);
                a.href = link;

                document.body.appendChild(a);

                a.click();

                document.body.removeChild(a);
            }

            return true;
        }
    };

    function getFileName(settings) {
        return ( settings.filename ? settings.filename : "table2excel" );
    }

    // Removes all img tags
    function exclude_img(string) {
        var _patt = /(\s+alt\s*=\s*"([^"]*)"|\s+alt\s*=\s*'([^']*)')/i;
        return string.replace(/<img[^>]*>/gi, function myFunction(x){
            var res = _patt.exec(x);
            if (res !== null && res.length >=2) {
                return res[2];
            } else {
                return "";
            }
        });
    }

    // Removes all link tags
    function exclude_links(string) {
        return string.replace(/<a[^>]*>|<\/a>/gi, "");
    }

    // Removes input params
    function exclude_inputs(string) {
        var _patt = /(\s+value\s*=\s*"([^"]*)"|\s+value\s*=\s*'([^']*)')/i;
        return string.replace(/<input[^>]*>|<\/input>/gi, function myFunction(x){
            var res = _patt.exec(x);
            if (res !== null && res.length >=2) {
                return res[2];
            } else {
                return "";
            }
        });
    }

    $.fn[ pluginName ] = function ( options ) {
        var e = this;
            e.each(function() {
                if ( !$.data( e, "plugin_" + pluginName ) ) {
                    $.data( e, "plugin_" + pluginName, new Plugin( this, options ) );
                }
            });

        // chain jQuery functions
        return e;
    };

})( jQuery, window, document );

示例下载：https://download.youkuaiyun.com/download/lsfhack/88055068