jquery抛物线动画加入购物车

<li class="container">
     <li class="demo clearfix">
          <li class="per">
               <img src="images/1.jpg" width="180" height="240" alt="图片二"/>
               <li class="title">aaa</li>
               <a href="javascript:void(0);" class="button orange addcart">加入购物车</a>
          </li>
          <li class="per">
               <img src="images/2.jpg" width="180" height="240" alt="图片二"/>
               <li class="title">bbb</li>
               <a href="javascript:void(0);" class="button orange addcart">加入购物车</a>
          </li>
     </li>
</li>

<li class="cart-sidebar">
     <li class="cart">
          <i id="icon-cart"></i>
          <span>购物车</span>
     </li>
</li>
<li id="tip">成功加入购物车！</li>


<script>...
$(function() ...{ 
    var offset = $("#icon-cart").offset(); 
    $(".addcart").click(function(event) ...{ 
        var img = $(this).parent().children('img').attr('src'); //获取当前点击图片链接 
        var flyer = $('<img class="flyer-img" src="' + img + '">'); //抛物体对象 
        flyer.fly(...{ 
            start: ...{ 
                left: event.pageX,//抛物体起点横坐标 
                top: event.pageY //抛物体起点纵坐标 
            }, 
            end: ...{ 
                left: offset.left + 10,//抛物体终点横坐标 
                top: offset.top + 10, //抛物体终点纵坐标 
            }, 
            onEnd: function() ...{ 
                $("#tip").show().animate(...{width: '200px'},300).fadeOut(500);////成功加入购物车动画效果 
                this.destory(); //销毁抛物体 
            } 
        }); 
    }); 
});
<script>