js获取地址栏上的Id值

//方法一

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);
        if (str.indexOf("&") != -1) {
            strs = str.split("&");
            for (var i = 0; i < strs.length; i++) {
                theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
            }
        } else {
            theRequest[str.split("=")[0]] = unescape(str.split("=")[1]);
        }
    }
    return theRequest;
}

//方法二

funaction getRequest(){

　　var url = location.search; //获取url中"?"符后的字串

　　var arr = url.split('=');

　　var theRequest = arr[1];

　　return theRequest;

}

//调用

$(funaction(){

　　 var Request = new Object();
    Request = GetRequest();
    var projectId = Request['id']; //对应地址栏上的ID属性名

})