Element: animationend event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since December 2019.
The animationend event is fired when a CSS Animation has completed. If the animation aborts before reaching completion, such as if the element is removed from the DOM or the animation is removed from the element, the animationend event is not fired.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("animationend", (event) => { })
onanimationend = (event) => { }
Event type
An AnimationEvent. Inherits from Event.
Event properties
Also inherits properties from its parent Event.
AnimationEvent.animationNameRead only-
A string containing the value of the
animation-namethat generated the animation. AnimationEvent.elapsedTimeRead only-
A
floatgiving the amount of time the animation has been running, in seconds, when this event fired, excluding any time the animation was paused. For ananimationstartevent,elapsedTimeis0.0unless there was a negative value foranimation-delay, in which case the event will be fired withelapsedTimecontaining(-1 * delay). AnimationEvent.pseudoElementRead only-
A string, starting with
'::', containing the name of the pseudo-element the animation runs on. If the animation doesn't run on a pseudo-element but on the element, an empty string:''.
Examples
This example gets an element that's being animated and listens for the animationend event:
const animated = document.querySelector(".animated");
animated.addEventListener("animationend", () => {
console.log("Animation ended");
});
The same, but using the onanimationend event handler property:
const animated = document.querySelector(".animated");
animated.onanimationend = () => {
console.log("Animation ended");
};
Live example
HTML
<div class="animation-example">
<div class="container">
<p class="animation">You chose a cold night to visit our planet.</p>
</div>
<button class="activate" type="button">Activate animation</button>
<div class="event-log"></div>
</div>
CSS
.container {
height: 3rem;
}
.event-log {
width: 25rem;
height: 2rem;
border: 1px solid black;
margin: 0.2rem;
padding: 0.2rem;
}
.animation.active {
animation-duration: 2s;
animation-name: slide-in;
animation-iteration-count: 2;
}
@keyframes slide-in {
from {
transform: translateX(100%) scaleX(3);
}
to {
transform: translateX(0) scaleX(1);
}
}
JavaScript
const animation = document.querySelector("p.animation");
const animationEventLog = document.querySelector(
".animation-example>.event-log",
);
const applyAnimation = document.querySelector(
".animation-example>button.activate",
);
let iterationCount = 0;
animation.addEventListener("animationstart", () => {
animationEventLog.textContent = `${animationEventLog.textContent}'animation started' `;
});
animation.addEventListener("animationiteration", () => {
iterationCount++;
animationEventLog.textContent = `${animationEventLog.textContent}'animation iterations: ${iterationCount}' `;
});
animation.addEventListener("animationend", () => {
animationEventLog.textContent = `${animationEventLog.textContent}'animation ended'`;
animation.classList.remove("active");
applyAnimation.textContent = "Activate animation";
});
animation.addEventListener("animationcancel", () => {
animationEventLog.textContent = `${animationEventLog.textContent}'animation canceled'`;
});
applyAnimation.addEventListener("click", () => {
animation.classList.toggle("active");
animationEventLog.textContent = "";
iterationCount = 0;
const active = animation.classList.contains("active");
applyAnimation.textContent = active
? "Cancel animation"
: "Activate animation";
});
Result
Specifications
| Specification |
|---|
| CSS Animations Level 1 # eventdef-globaleventhandlers-animationend |
Browser compatibility
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