<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
$("#start").click(function(){
$("div").animate({height: 300}, 3000);
$("div").animate({width: 300}, 3000);
});
$("#complete").click(function(){
$("div").finish();
});
});
</script>
</head>
<body>
<p>
<button id="start">Start Animation</button>
<button id="complete">Finish Current Animation</button>
</p>
<div style="background:#98bf21;height:100px;width:100px"></div>
</body>
</html>