Stopping a CSS animation but letting its current i

Question

I have the following HTML:

<div class="rotate"></div>​

And the following CSS:

@-webkit-keyframes rotate {
  to { 
    -webkit-transform: rotate(360deg);
  }
}
.rotate {
    width: 100px;
    height: 100px;
    background: red;
    -webkit-animation-name:             rotate;
    -webkit-animation-duration:         5s;
    -webkit-animation-iteration-count:  infinite;
    -webkit-animation-timing-function:  linear;
}​

I want to know if there is a way (using JavaScript) to stop the animation but let it finish its current iteration (preferably by changing one or a few CSS properties). I have tried setting -webkit-animation-name to have a blank value but that causes the element to jump back to its original position in a jarring fashion. I have also tried setting -webkit-animation-iteration-count to 1 but that does the same thing.

Answer 1

Stop the animation upon receiving an animationiteration event. Something like this (using jQuery):

CSS

@-webkit-keyframes rotate {
  to {
    -webkit-transform: rotate(360deg);
  }
}
.rotate {
    width: 100px;
    height: 100px;
    background: red;
}
.rotate.anim {
    -webkit-animation-name:             rotate;
    -webkit-animation-duration:         5s;
    -webkit-animation-iteration-count:  infinite;
    -webkit-animation-timing-function:  linear;
}

HTML

<div class="rotate anim">TEST</div>
<input id="stop" type="submit" value="stop it" />

JS (JQuery)

$("#stop").click(function() {
    $(".rotate").one('animationiteration webkitAnimationIteration', function() {
        $(this).removeClass("anim");
    });
});

Fiddle: http://jsfiddle.net/sSYYE/1/

Note that I'm using .one here (not .on) so that the handler only runs once. That way, the animation can later be restarted.

Answer 2

Do you mean you want the animation to stop where it is when it ends without jumping back to its original position?

Then you want:

Animate something moving from one place to another and have it stay there: animation-fill-mode:forwards;

check this link:

http://www.w3schools.com/cssref/css3_pr_animation-fill-mode.asp