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Abstract: This CSS module describes a way for authors to animate the values of CSS properties over time, using keyframes. The behavior of these keyframe animations can be controlled by specifying their duration, number of repeats, and repeating behavior.
urlPrefix: https://html.spec.whatwg.org/multipage/webappapis.html; type: dfn; spec: html
@@ -1387,25 +1385,25 @@ Working Group Resolutions that are pending editing</h2>
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<ul>
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<li>Issue(7335): Detail how/when keyframe values are computed; using <a href="http://lists.w3.org/Archives/Public/www-style/2014Aug/0132.html">G.beta in dbaron's mail</a>
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<li><del>Agreed that both transitions and animations animate all properties. css-transitions to define animation of non-interoperable/discrete values. They take their starting values below 50% timing function progress, and end values above</del>
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<li><del>Dynamic changes to animation properties/keyframes. Tab to propose resolution. (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14713">Bug 14713</a>)
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<li><del>Negative animation-delay values apply against the active duration of the animation i.e. (animation-duration*animation-iteration-count). The delay can thus swallow iterations for which no iteration event will be fired. The start/end events are still fired. Even when delay == (-1*active_duration)
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<li><del>Fire animation start/end events when animation-duration is zero, with 0 elapsedTime
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<li><del>If animation-iteration-count is infinite and duration is 0, treat the iteration-count as if it was finite and run a 0s second (option A in <a href="http://lists.w3.org/Archives/Public/www-style/2014Sep/0056.html">Brian's mail</a>)
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<li><del>If an animation with a negative animation delay is initially paused, the start event still fires
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<li><del>Dynamic changes to animation properties/keyframes. Tab to propose resolution. (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14713">Bug 14713</a>)</del>
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<li><del>Negative animation-delay values apply against the active duration of the animation i.e. (animation-duration*animation-iteration-count). The delay can thus swallow iterations for which no iteration event will be fired. The start/end events are still fired. Even when delay == (-1*active_duration)</del>
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<li><del>Fire animation start/end events when animation-duration is zero, with 0 elapsedTime</del>
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<li><del>If animation-iteration-count is infinite and duration is 0, treat the iteration-count as if it was finite and run a 0s second (option A in <a href="http://lists.w3.org/Archives/Public/www-style/2014Sep/0056.html">Brian's mail</a>)</del>
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<li><del>If an animation with a negative animation delay is initially paused, the start event still fires</del>
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</ul>
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<li>2012-10-29 minutes
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<ul>
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<li><del>Change the animation properties to be dynamically changeable
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<li><del>@keyframes can be dynamically changed
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<li><del>Change the animation properties to be dynamically changeable</del>
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<li><del>@keyframes can be dynamically changed</del>
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<li><del>When you encounter duplicate animations names, last one wins.</del>
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<li><del>Make *animations* transition *all* properties. Unless otherwise specified, discrete properties take their starting values below 50% timing function progress, and end values above 50% timing function progress.</del>
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</ul>
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<li>2012-12-12 minutes and intermediate comments <del>and 2012-12-19 minutes</del>
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<ul>
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<li><del>Animations only run if they contain at least one valid keyframe rule (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=15251">Bug</a>)
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<li><del>Animations only run if they contain at least one valid keyframe rule (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=15251">Bug</a>)</del>
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<li><del>When an element changes from display:none to display: non-none, animations start immediately (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14785">Bug</a>)</del>
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<li><del>An initially-paused animation is still started (fires start events etc.) (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14774">Bug</a>)
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<li><del>An initially-paused animation is still started (fires start events etc.) (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14774">Bug</a>)</del>
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<li><del>Animations can be paused during their delay phase, which freezes the remaining delay to be applied after it unpauses (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14774">Bug</a>)</del>
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<li><del>animation-play-state has the same list behavior as the other animation properties, matching the length of animation-name (<a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=14786">Bug</a>)</del>
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