javascript抖动元素的小例子_javascript技巧

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()