js获取url参数方法

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; 
}