jQuery ui效果下降逐渐消失

Question

Instead of dropping in and out of the scene. The element stays put and fades out instead of dropping like it's suppose to...

What am I doing wrong here?

Thanks

$(document).ready(function () {

    $("button").click(function () {
        $(".target").hide("drop", {
            direction: "up"
        }, 1000);
    });
});

and

   <button>Show</button> 
   <div class="target">
      <img src="http://i.imgur.com/EwHWLHV.png" alt="SO" />
   </div>

http://jsfiddle.net/pGv7R/

Answer 1

Use different versions. Eg:- jQuery 1.11.1 + jQuery UI 1.9.2