Restart animation in CSS3: any better way than removing the element?

No need in timeout, use reflow to apply the change:

function reset_animation() {
  var el = document.getElementById('animated');
  el.style.animation = 'none';
  el.offsetHeight; /* trigger reflow */
  el.style.animation = null; 
}
#animated {
  position: absolute;
  width: 50px; height: 50px;
  background-color: black;
  animation: bounce 3s ease-in-out infinite;
}
@keyframes bounce {
  0% { left: 0; }
  50% { left: calc( 100% - 50px ); }
  100% { left: 0; }
}
<div id="animated"></div>
<button onclick="reset_animation()">Reset</button>

Just set the animation property via JavaScript to "none" and then set a timeout that changes the property to "", so it inherits from the CSS again.

Demo for Webkit here: http://jsfiddle.net/leaverou/xK6sa/ However, keep in mind that in real world usage, you should also include -moz- (at least).

Tags:

Javascript

Css

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