.css() does animation
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
div {
position: absolute;
left: 10px;
top: 10px;
width: 20px;
height: 20px;
background-color: green;
}
</style>
<script
src="http://java2s.com/Book/JavaScriptDemo/jQuery/jquery-1.8.0.min.js"></script>
<script type="text/javascript">
$(function() {
$(document).click(function() {
var pos = $("div").css("left");
pos = parseInt(pos);
$("div").css("left", pos + 10);
});
});
</script>
</head>
<body>
<div></div>
</body>
</html>