<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="js/jquery-1.11.0.js" ></script>
<script src="js/demo11.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<p>456789</p>
<script>
/*
利用$.extend()编写font插件方法,让字体变大 并且可以实现连缀
例如:
$.font($("p"),"30px").html("变化了")
$.font($("p"),"20px").html("变化了")
* */
// $.font($("p"),"20px")
</script>
</body>
</html>