$.format = function (source, params) {            if (arguments.length == 1)                return function () {                    var args = $.makeArray(arguments);                    args.unshift(source);                    return $.validator.format.apply(this, args);                };            if (arguments.length > 2 && params.constructor != Array) {                params = $.makeArray(arguments).slice(1);            }            if (params.constructor != Array) {                params = [params];            }            $.each(params, function (i, n) {                source = source.replace(new RegExp("\\{" + i + "\\}", "g"), (typeof n == ‘undefined‘ || n == null) ? ‘‘ : n);            });            return source;        }

 function request(name) {            var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");            var r = window.location.search.substr(1).match(reg);            if (r != null) return r[2]; return null;        }

 // 设置Cookie        function setCookie(name, value) {            var expires = (arguments.length > 2) ? arguments[2] : null;            document.cookie = name + "=" + encodeURIComponent(value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + "";        }        // 获取Cookie        function getCookie(name) {            var value = http://www.mamicode.com/document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));            if (value != null) {                return decodeURIComponent(value[2]);            } else {                return null;            }        }        // 删除cookie        function removeCookie(name) {            var expires = new Date();            expires.setTime(expires.getTime() - 1000 * 60);            setCookie(name, "", expires);        }

  // 浮点数加法运算        function floatAdd(arg1, arg2) {            var r1, r2, m;            try {                r1 = arg1.toString().split(".")[1].length;            } catch (e) {                r1 = 0;            }            try {                r2 = arg2.toString().split(".")[1].length;            } catch (e) {                r2 = 0;            }            m = Math.pow(10, Math.max(r1, r2));            return (arg1 * m + arg2 * m) / m;        }        // 浮点数减法运算        function floatSub(arg1, arg2) {            var r1, r2, m, n;            try {                r1 = arg1.toString().split(".")[1].length;            } catch (e) {                r1 = 0            }            try {                r2 = arg2.toString().split(".")[1].length;            } catch (e) {                r2 = 0            }            m = Math.pow(10, Math.max(r1, r2));            n = (r1 >= r2) ? r1 : r2;            return ((arg1 * m - arg2 * m) / m).toFixed(n);        }        // 浮点数乘法运算        function floatMul(arg1, arg2) {            var m = 0, s1 = arg1.toString(), s2 = arg2.toString();            try {                m += s1.split(".")[1].length;            } catch (e) { }            try {                m += s2.split(".")[1].length;            } catch (e) { }            return Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m);        }        //保留2位四舍五入        function changeTwoDecimal_f(x) {            var f_x = parseFloat(x);            if (isNaN(f_x)) {                alert(‘function:changeTwoDecimal->parameter error‘);                return false;            }            var f_x = Math.round(x * 100) / 100;            var s_x = f_x.toString();            var pos_decimal = s_x.indexOf(‘.‘);            if (pos_decimal < 0) {                pos_decimal = s_x.length;                s_x += ‘.‘;            }            while (s_x.length <= pos_decimal + 2) {                s_x += ‘0‘;            }            return s_x;        }        // 浮点数除法运算        function floatDiv(arg1, arg2) {            var t1 = 0, t2 = 0, r1, r2;            try {                t1 = arg1.toString().split(".")[1].length;            } catch (e) { }            try {                t2 = arg2.toString().split(".")[1].length;            } catch (e) { }            with (Math) {                r1 = Number(arg1.toString().replace(".", ""));                r2 = Number(arg2.toString().replace(".", ""));                return (r1 / r2) * pow(10, t2 - t1);            }        }        // 设置数值精度        function setScale(value, scale, roundingMode) {            if (roundingMode.toLowerCase() == "roundhalfup") {                return (Math.round(value * Math.pow(10, scale)) / Math.pow(10, scale)).toFixed(scale);            } else if (roundingMode.toLowerCase() == "roundup") {                return (Math.ceil(value * Math.pow(10, scale)) / Math.pow(10, scale)).toFixed(scale);            } else {                return (Math.floor(value * Math.pow(10, scale)) / Math.pow(10, scale)).toFixed(scale);            }        }

 function htmlEscape(htmlString) {            htmlString = htmlString.replace(/&/g, ‘&amp;‘);            htmlString = htmlString.replace(/</g, ‘&lt;‘);            htmlString = htmlString.replace(/>/g, ‘&gt;‘);            htmlString = htmlString.replace(/‘/g, ‘&acute;‘);            htmlString = htmlString.replace(/"/g, ‘&quot;‘);            htmlString = htmlString.replace(/\|/g, ‘&brvbar;‘);            return htmlString;        }