js獲取url參數值的兩種方式

方法一：正則分析法 

 
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; 
} 

調用方法： 
alert(GetQueryString("參數名1"));alert(GetQueryString("參數名2")); 
alert(GetQueryString("參數名3")); 

方法二 

 
<Script language="javascript"> 
  function GetRequest() { 
    var url = location.search; //獲取url中"?"符後的字串 
    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> 

調用方法： 

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

原文出自：http://www.jb51.net/article/41274.htm