<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Effects - Animate 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: 500px;
height: 170px;
padding: 0.4em;
position: relative;
background: #fff;
}
#effect h3 {
margin: 0;
padding: 0.4em;
text-align: center;
}
</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() {
setInterval(function() {
var back = ["#ff0000", "blue", "gray"];
var rand = back[Math.floor(Math.random() * back.length)];
$("#effect").animate({
backgroundColor: rand,
color: "#fff",
}, 1000);
}, 1000);
});
});
</script>
</head>
<body>
<div class="toggler">
<div id="effect" class="ui-widget-content ui-corner-all">
<h3 class="ui-widget-header ui-corner-all">Animate</h3>
<p>
Etiam libero neque, luctus a, eleifend nec, semper at, lorem. Sed pede. Nulla lorem metus, adipiscing ut, luctus sed, hendrerit vitae, mi.
</p>
</div>
</div>
<button id="button" class="ui-state-default ui-corner-all">start</button>
</body>
</html>