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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
 //sArgName表示要获取哪个参数的值
 function GetArgsFromHref(sArgName) 
  { 
 var sHref = "Untitled-2.html?id=2"//测试数据,实际情况是用window.location.href得到URL
 alert(sHref);
  var args = sHref.split("?");
  var retval = ""; 
  if(args[0] == sHref) /*参数为空*/ 
  { 
  return retval; /*无需做任何处理*/ 
  } 
  var str = args[1]; 
  args = str.split("&"); 
  for(var i = 0; i < args.length; i++ ) 
  { 
  str = args[i]; 
  var arg = str.split("="); 
  if(arg.length <= 1) continue; 
  if(arg[0] == sArgName) retval = arg[1]; 
  } 
  //return retval;
 alert(retval); 
  } 
 
</script>
</head>
 <input type="button" value="参数" />
<body>
</body>
</html>