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How Can I Detect the Completion of CSS3 Transitions and Animations with jQuery?
How Can I Detect the Completion of CSS3 Transitions and Animations with jQuery?
Dec 27, 2024 pm 04:08 PM
Waiting for CSS3 Transitions with jQuery
When using CSS3 transitions to animate elements, determining when the animation has completed can be challenging. Unlike jQuery animations, which allow for callbacks when animations finish, CSS3 transitions do not provide such a mechanism. However, there is a solution using jQuery.
Detecting Transition Completion
jQuery provides event listeners that can be used to detect the end of CSS3 transitions. These listeners are:
- transitionend
- webkitTransitionEnd
- oTransitionEnd
- MSTransitionEnd
You can bind to these events using the bind() method on the selector you wish to track. For example:
$("#someSelector").bind("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){
// Code to execute when the transition ends
});
Detecting Animation Completion
Similar to transitions, animations can also be detected using jQuery event listeners:
- animationend
- webkitAnimationEnd
- oAnimationEnd
- MSAnimationEnd
Use the bind() method as before:
$("#someSelector").bind("animationend webkitAnimationEnd oAnimationEnd MSAnimationEnd", function(){
// Code to execute when the animation ends
});
One-Time Event Firing
To ensure the event handler only fires once, use jQuery's .one() method:
$("#someSelector").one("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){
// Code to execute when the transition ends
});
$("#someSelector").one("animationend webkitAnimationEnd oAnimationEnd MSAnimationEnd", function(){
// Code to execute when the animation ends
});
Best Practices
- Pass all browser-prefixed event strings into the bind() method to support all browsers.
- Use .one() to prevent the handler from firing multiple times.
- jQuery's bind() method is deprecated; on() is preferred as of version 1.7.
- Alternatively, use off() to detach the callback after the event fires to ensure it fires only once.
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