var path = 'www.u.com/home?id=2&type=0&dtype=-1';
function parseUrl(url){
  var result = [];
  var query = url.split("?")[1];
  var queryArr = query.split("&");
  queryArr.forEach(function(item){
    var obj = {};
    var value = item.split("=")[0];
    var key = item.split("=")[1];
    obj[key] = value;
    result.push(obj);
  });
  return result;
}
console.log(parseUrl(path)); 
//[{id: '2'},{type: '0'},{dtype: '-1'}]

function getQueryString(name) { 
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); 
var r = window.location.search.substr(1).match(reg); 
if (r != null) return unescape(r[2]); return null; 
} 

alert(GetQueryString("参数名1"));alert(GetQueryString("参数名2")); 
alert(GetQueryString("参数名3")); 

<Script language="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; 
} 
</Script> 

<Script language="javascript"> 
var Request = new Object(); 
Request = GetRequest(); 
var 参数1,参数2,参数3,参数N; 
参数1 = Request['参数1']; 
参数2 = Request['参数2']; 
参数3 = Request['参数3']; 
参数N = Request['参数N']; 
</Script>