javascript 获取GET方法的参数

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>

    <script type="text/javascript">

        url = location.search.substr(1);
        if (url.length > 0) {
            ar = url.split(/[&=]/);
            for (i = 0; i < ar.length; i += 2) {
                alert("参数:" + ar[i] + ":" + ar[i + 1] + "<br>");
            }
        }    
    </script>

</head>
<body>
    <a href='?a=你好&room=awe'>test</a>
</body>
</html>
冯瑞涛