<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>使用window.requestAnimationFrame制作动画</title>
<style type="text/css">
.m-test{width: 100px;height: 100px;background-color: red;}
</style>
</head>
<body>
<div class="m-test" id="m-test"></div>
<script type="text/javascript">
var start = null;
var element = document.getElementById('m-test');
element.style.position = 'absolute';
function step(timestamp) {
if (!start) start = timestamp;
var progress = timestamp - start;
element.style.left = Math.min(progress / 10, 200) + 'px';
if (progress < 2000) {
window.requestAnimationFrame(step);
}
}
window.requestAnimationFrame(step);
</script>
</body>
</html>