复制代码代码如下:
<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv = "content-type" content = "text /html; charset = utf-8" />
<title> js 取模隔行变色 </title>
<script type = "text/javascript">
window.onload = function ()
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var oul = document.getElementById ('UL1');
var Ali = oul.getElementsByTagname ('li');
สำหรับ (var i = 0; i <ali .length; i ++)
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ถ้า (i%2 == 0) // 取模求余数
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Ali [i] .style.background = 'Red';
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-
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</script>
</script> </head>
<body>
<ul id = "ul1">
<li> Webtall </li>
<li> Webtall </li>
<li> Webtall </li>
<li> Webtall </li>
<li> Webtall </li>
</ul>
</body>
</html>