//删除Url参数值        function DeleteUrlParam(url,name) {            var reg = new RegExp("([&\?]?)" + name + "=[^&]+(&?)", "g")            var newUrl = url.replace(reg, function (a, b, c) {                if (c.length == 0) {                    return '';                } else {                    return b;                }            });            return newUrl;        }        //设置Url参数值        function SetUrlParam(url, pname, pvalue) {            var strNewUrl = new String();            var strUrl = url;            if (strUrl.indexOf("?") != -1) {                strUrl = strUrl.substr(strUrl.indexOf("?") + 1);                if (strUrl.toLowerCase().indexOf(pname.toLowerCase()) == -1) {                    strNewUrl = url + "&" + pname + "=" + pvalue;                    return strNewUrl;                } else {                    var aParam = strUrl.split("&");                    for (var i = 0; i < aParam.length; i++) {                        if (aParam[i].substr(0, aParam[i].indexOf("=")).toLowerCase() == pname.toLowerCase()) {                            aParam[i] = aParam[i].substr(0, aParam[i].indexOf("=")) + "=" + pvalue;                        }                    }                    strNewUrl = url.substr(0, url.indexOf("?") + 1) + aParam.join("&");                    return strNewUrl;                }            }            else {                strUrl += "?" + pname + "=" + pvalue;                return strUrl            }        }

参考网文：