Пример ниже:
Код:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Effects - addClass demo</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
.toggler { width: 500px; height: 200px; position: relative; }
#button { padding: .5em 1em; text-decoration: none; }
#effect { width: 240px; padding: 1em; border: 1px solid #000; background: #eee; color: #333; }
.newClass { text-indent: 40px; letter-spacing: .4em; width: 410px; height: 120px; padding: 30px; margin: 10px; font-size: 1.1em; }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#button" ).on( "click", function() {
$( "#effect" ).addClass( "newClass", 1000, callback );
});
function callback() {
setTimeout(function() {
$( "#effect" ).removeClass( "newClass" );
}, 1500 );
}
} );
</script>
</head>
<body>
<div class="toggler">
<div id="effect" class="ui-corner-all">
Etiam libero neque, luctus a, eleifend nec, semper at, lorem. Sed pede.
</div>
</div>
<button id="button" class="ui-state-default ui-corner-all">Run Effect</button>
</body>
</html> 
