JS获取url参数，主域名等方法

<script>
alert(location.hostname)
alert(location.port)
alert(location.pathname)
alert(location.search)
</script>

<script>
function winsx(url)        //URL传递的参数
{
  var winurl =url?url:(unescape(window.location.href));
  var wlp = winurl.split("?")[1];
  var wincs = wlp.split("&");
  for(var i=0; i<wincs.length; i++)
  {
    var tur = wincs[i].split("=");
    eval('this.'+tur[0]+'="'+tur[1]+'";');
  }
}
var ug = new winsx("http://www.yourname.com/aa/bb.php?val=11&test=2");
alert(ug.val)
alert(ug.test)
</script>