如果你想等到每个动画完成在执行下一步之前，请使用文档中详细介绍的动画回调：

If you want to wait until each animation completes before doing the next step, use the animation callbacks detailed in the documentation:

$('#bar').click(function () {
  $('#foo p').hide('slow', function(){
    $(this).appendTo('#bar').show('slow');
  });
});