javascript: 处理URL字符串

        //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：

http://www.cnblogs.com/eyu/archive/2010/04/08/1707554.html

http://blog.sina.com.cn/s/blog_43f5c8b40100wxgr.html

http://blog.csdn.net/a497785609/article/details/6208108