ul是怎么被隐藏起来的
<div class="contextMenu" id="sysMenu"> <ul> <li id="Li3"><img src="http://img1.sycdn.imooc.com//52e4b34b0001bb6d00160016.jpg" alt="" />保存</li> <li id="Li4"><img src="http://img1.sycdn.imooc.com//52e4b3680001424900160016.jpg" alt="" />退出</li> </ul> </div>
找了下。。没弄清楚呢
