CSS3 Transition Events
CSS3 transitions provide a seamless way to add animations and effects to your web pages. However, to effectively control and synchronize these animations, it's essential to know when they start and end. Enter CSS3 transition events.
Event Types
Depending on the browser you're using, there are different events fired when a CSS3 transition starts or ends:
-
W3C CSS Transitions Draft:
- transitionstart (start)
- transitionend (end)
-
Webkit:
- webkitTransitionEnd (end)
-
Mozilla:
- transitionend (end)
-
Opera:
- oTransitionEnd (end)
-
Internet Explorer:
- transitionend (end)
Listening for Events
To listen for CSS3 transition events, you can use JavaScript event listeners:
element.addEventListener('transitionend', function(event) {
// Transition completed
});
Browser Compatibility
The availability of CSS3 transition events varies across browsers. Refer to the table below for compatibility information:
| Browser | Transition Start Event | Transition End Event |
|---|---|---|
| W3C CSS Transitions Draft | Yes | Yes |
| Webkit | No | Yes |
| Mozilla | No | Yes |
| Opera | No | Yes |
| Internet Explorer | No | Yes |
Usage Example
The following code demonstrates how to use transitionend to listen for the completion of a CSS3 transition:
<div>
When you hover over the #box element, the transition will animate the width to 200px smoothly. The transitionend event will be fired when the transition finishes.
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