没有使用特定的插件，所以我不确定传递给回调的值是什么，但也许是这样的：

Haven't used that particular plugin, so I'm not sure what values are being passed to the callback, but maybe something like this:

$('.prettyArchive select').dropkick({
      theme: 'default',
      change: function (value, label) {
         document.location.href=value;
      }
});