js之获取url中"?"后面的字串

url : index.php?id=123

<script type="text/javascript">function GetRequest() {            var url = location.search; //获取url中"?"符后的字串            var theRequest = new Object();            if (url.indexOf("?") != -1) {                var str = url.substr(1);                strs = str.split("&");                for ( var i = 0; i < strs.length; i++) {                    theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);                }            }            return theRequest;        }var Request=undefined;Request=GetRequest();var id=Request["id"];</script>