应项目需要，前端直接导出表格中的数据。
百度找到了table2excel ，很实用，但是导出的表格没有边框，且表格中的数据没有居中。
网上没找到对应的办法，就自己对table2excel.js做了修改，能够实现导出的表格有边框，文字居中的要求，故写本文记录下。
基于jQuery table2excel - v1.1.1，大家可根据实际需求，将功能再做升级。我现在也只是简单粗暴的添加了下功能。
修改的位置如下：
52行：head: "<table >"修改为head: "<table border='1'>"
65行：tempRows += "<tr >";修改为tempRows += "<tr align='center' valign='center' >";
75行：tempRows += "<td > </td>";修改为tempRows += "<td align='center' valign='center' > </td>";
77行：tempRows += "<td ";修改为tempRows += "<td align='center' valign='center' ";
使用的方法还是官方的方法：
$(".table2excel").table2excel({
exclude: ".noExl",
name: "Excel Document Name",
filename: "导出的文件名",
exclude_img: true,
exclude_links: true,
exclude_inputs: true
});
然后想要知道怎么解决打开表格时的不安全提示框问题。
最后附上修改后的源码，大家导入到项目中直接用就好了：
/*
* 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：导出表格边框，文字居中
*/
//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'>",//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) {
tempRows += "<tr align='center' valign='center' >"; //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"),
flag: $(q).find(e.settings.exclude)
};
if( rc.flag.length > 0 ) {
tempRows += "<td align='center' valign='center' > </td>"; // exclude it!! //文字居中
} else {
tempRows += "<td align='center' valign='center' "; //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 );
