<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.c1{
background: red; /*定义li为偶数时候的颜色*/
}
.c2{
background: pink ; /*定义li为奇数时候的颜色*/
}
ol li {
list-style: none;
width: 500px; /*去除默认样式 定义li宽度为500px*/
}
ol li:hover{
background: orange; /*鼠标滑过时li的颜色*/
}
</style>
</head>
<body>
<ol >
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
<li>此处是内容...............</li>
</ol>
<script type="text/javascript">
var oli=document.getElementsByTagName("li"); //获取li的标签
for(i=0;i<oli.length;i++){
var olis=oli[i]; //获取li有多少个 并赋值给kk
i%2===0 ? olis.className="c1":olis.className="c2"; //li的偶数行颜色为c1 奇数行颜色为c2
olis.onmouseout=function(){
this.className="c2"; //鼠标滑过后颜色为c2
}
}
</script>
</body>
</html>
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