当动画样式改变时，为匹配的元素集合内的每个元素添加和移除指定的 Class。
如需了解更多有关 .switchClass() 方法的细节，请查看 API 文档 .switchClass()。
.switchClass() 演示
点击按钮预览特效。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI 特效 - .switchClass() 演示</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.9.1.js"></script>
<script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
<style>
.toggler { width: 500px; height: 200px; position: relative; }
#button { padding: .5em 1em; text-decoration: none; }
#effect { position: relative; }
.newClass { width: 240px; padding: 1em; letter-spacing: 0; font-size: 1.2em; margin: 0; }
.anotherNewClass { text-indent: 40px; letter-spacing: .4em; width: 410px; height: 100px; padding: 30px; margin: 10px; font-size: 1.6em; }
</style>
<script>
$(function() {
$( "#button" ).click(function(){
$( ".newClass" ).switchClass( "newClass", "anotherNewClass", 1000 );
$( ".anotherNewClass" ).switchClass( "anotherNewClass", "newClass", 1000 );
return false;
});
});
</script>
</head>
<body>
<div class="toggler">
<div id="effect" class="newClass ui-corner-all">
Etiam libero neque, luctus a, eleifend nec, semper at, lorem. Sed pede.
</div>
</div>
<a href="#" id="button" class="ui-state-default ui-corner-all">运行特效</a>
</body>
</html>
