使用方法：
1、head引入css文件
<link rel="stylesheet" href="css/commen.css">
<link rel="stylesheet" href="css/demo5.css">
2、head引入js文件
<script src="js/jquery-1.10.1.min.js"></script>
<script src="js/rotate.js"></script>
<script src="js/numToChinese.js"></script>
<script src="js/demo5.js"></script>
3、body引入HTML代码
<div class="clock">
<div class="second">
<ul></ul>
<div class="showRod"></div>
<div class="needle"></div>
</div>
<div class="minute">
<ul></ul>
</div>
<div class="hour">
<ul></ul>
</div>
<div class="day"></div>
</div>
<script>
window.onload = function(){
secondHtml();
}
</script>
