jQuery 遍历ul li 添加 移除

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery li</title>
<script src="jquery-1.4.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
function appendli()
{
    jQuery("#chens").append("<li><img src=/"http://img1.gtimg.com/worldcup/pics/hv1/81/146/572/37231611.jpg/" /></li>");
}
</script>
</head>

<body>
<ul id="chens">
<li></li>
<li></li>
</ul>
<input type="button" value="addli" id="chen" />
<script type="text/javascript">
jQuery("#chen").bind("click",function(){appendli();});

jQuery("#chens li").click(function(){
  jQuery(this).css("color","#f00");
  jQuery(this).remove();
});
</script>
</body>
</html>