index.html:
<!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>JS之DivColorChange</title>
<script type="text/javascript" src="jquery-1.10.1.js"></script>
<script type="text/javascript" src="demo.js"></script>
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div style="width:200px;height:200px;background:red;">
</div>
</body>
</html>
样式设置style.css:
.red {
color:red;
}
.green {
color:green;
}
.bg {
background-color:#ccc;
}
.size {
font-size:20px;
}
.js是jquery的脚本文件,作用是实现图片缓存和加载。(文件已经上传)
执行效果如图:
If reference to indicate the source:蔡都平