CSSTransition

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The CSSTransition interface of the Web Animations API represents an Animation object used for a CSS Transition.

Properties

Inherits methods from its ancestor Animation and adds transitionProperty.

CSSTransition.transitionPropertyRead only

Returns the transition CSS property name as a CSSOMString.

Event handlers

No specific event handlers; inherits methods from its ancestor Animation.

Methods

No specific methods; inherits methods from its ancestor Animation.

Examples

Inspecting the returned CSSTransition

The transition in the following example changes the width of the box on hover. Calling Element.getAnimations() returns an array of all Animation objects. In our case this returns a CSSTransition object, representing the animation created.

.box {
  background-color: #165baa;
  color: #fff;
  width: 100px;
  height: 100px;
  transition: width 4s;
}

.box:hover {
  width: 200px;
}
const item = document.querySelector(".box");
item.addEventListener('transitionrun', () => {
  let animations = document.querySelector(".box").getAnimations();
  console.log(animations[0]);
});

Specifications

Specification
CSS Transitions Level 2 (CSS Transitions 2)
# the-CSSTransition-interface

Browser compatibility

BCD tables only load in the browser