复制代码代码如下:
<html xmlns = "http://www.w3.org/1999/xhtml">
<adal>
<meta http-equiv = "contenu-type" contenu = "text / html; charset = utf-8" />
<Title> JS 取模隔行变色 </TITME>
<script type = "text / javascript">
window.onload = function ()
{
var oul = document.getElementById ('ul1');
var ali = oul.getElementsByTagName ('li');
pour (var i = 0; i <ali .length; i ++)
{
if (i% 2 == 0) // 取模 求余数
{
Ali [i] .style.background = 'red';
}
}
}
</cript>
</cript> </ head>
<body>
<ul id = "ul1">
<li> webtall </li>
<li> webtall </li>
<li> webtall </li>
<li> webtall </li>
<li> webtall </li>
</ul>
</docy>
</html>