在线运行代码 - 菜鸟教程

<html>
<head>
<style type="text/css">#typing
{
behavior:url(typing.htc.html);
font-family:'courier new';
}
</style>
</head>

<body>
<span id="typing" speed="100">IE5 introduced DHTML behaviors. Behaviors are a way to add DHTML functionality to HTML elements with the ease of CSS.<br><br>How does behaviors work?<br>By using XML we can link behaviors to any element in a web page and manipulate that element.</p>
</span>
</body>
</html>

源代码

动行结果