一、复杂的：    
<script language="javascript">   
var tmpArr,QueryString; 
var URL = document.location.toString(); 
if(URL.lastIndexOf("?")!=-1){ 
QueryString= URL.substring(URL.lastIndexOf("?")+1,URL.length); 
tmpArr=QueryString.split("&"); 
for (i=0;i<=tmpArr.length;i++) 
{ try{eval (tmpArr[i]);} 
catch (e){ 
var re = new RegExp("(.*)=(.*)","ig"); 
re.exec(tmpArr[i]); 
try{eval (RegExp.$1+"="+"\""+RegExp.$2+"\"");} 
catch(e){} 
} 
} 
} 
else 
{ 
QueryString=""; 
} 
</script> 
***注意浏览器中URL的变化***<br><br> 
<script language="javascript"> 
document.write ("查询串为："+QueryString+"<br>"); 
if (typeof(ID)!="undefined") 
{document.write ("ID 值 为："+ID+"<br>");} 
if (typeof(Name)!="undefined") 
{document.write ("Name值为："+Name+"<br>");} 
</script> 
<br><br> 
<a href="?">例子1</a> <a href="?ID=23">例子2</a> <a href="?ID=67&Name=cool">例子3</a>  

二、简洁的：

function getParameter(para){ 
var s=unescape(window.location.href); 
var arr=s.match(para+"=([^&]*)"); 
if(arr==null) return null; 
else return arr[1]; 
}

三、简洁的：

<a href=?qq=1&ww=2&aa=3>测试</a> 
<script> 
function chk() 
{ 
if(location.search=="") 
{ 
return false 
} 
var s=location.search 
alert(s.substr(1,s.length).split("&")) 
} 
window.onload=chk 
</script>

四、

<script> 
function QueryString(item){ 
var sValue=location.search.match(new RegExp("[\?\&]"+item+"=([^\&]*)(\&?)","i")) 
return sValue?sValue[1]:sValue 
} 
alert(QueryString("id")) 
alert(QueryString("lp")) 
alert(QueryString("DaysPrune")) 
</script>

<script language="javascript" src="Comment.php?..."></script>
<script language="javascript">
var nid=Request("id"); 
var nsite = Request("site"); 
</script>

var script = document.createElement("script");
script.src = "...";
script.defer = true;
document.body.appendChild(script);