javascript抖动元素的小例子
作者：
<!doctype html>
<html lang="zh">
<head>
<meta charset="utf-8">
<title>xxxxxx</title>
<style>
#control {
height: 100px;
width: 100%;
background: gray;
}
</style>
<script>
function shake(e, onComplete, distance, interval)
{
if (typeof e === "string")
{
e = document.getElementById(e);
} // end if
distance = distance || 8;
interval = interval || 800;
var originalStyle = e.style.cssText;
e.style.position = "relative";
var start = (new Date()).getTime();
animate();
function animate()
{
var now = (new Date()).getTime();
var elapsed = now - start;
var progress = elapsed / interval;
if (progress < 1)
{
var y = distance * Math.sin(Math.PI * progress * 4);
var x = distance * Math.cos(Math.PI * progress * 4);
e.style.left = x + "px";
e.style.top = y + "px";
console.log(e.style.cssText);
setTimeout(animate, Math.min(25, elapsed));
} // end if
else
{
e.style.cssText = originalStyle;
if (onComplete)
{
onComplete(e);
} // end if
} // end else
} // end animate()
} // end shake()
</script>
</head>
<body>
<div id="control" onclick="shake(this);">
</div>
</div>
</body>
</html>