# TransitionEvent elapsedTime Property

Event Object

## Example

Find out how many seconds a transition has been running:

document.getElementById("myDIV").addEventListener("transitionend", myFunction);
function myFunction(event) {
this.innerHTML = "Transition lasted: " + event.elapsedTime + " seconds";
}
Try it yourself »

## Definition and Usage

The elapsedTime property returns the number of seconds a transition has been running, when a transitionend event occurs.

Note: The return value is not affected if the transition is paused (by using the transition-delay CSS property).

This property is read-only.

## Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property |  |  |  |  |
--- | --- | --- | --- | --- | ---
elapsedTime | Yes | 10.0 | 4.0 | Yes | Yes

## Syntax

event.elapsedTime

## Technical Details

Return Value: | A Number, representing the number of seconds a transition has been running

## Related Pages

HTML DOM reference: The transitionend Event

HTML DOM reference: TransitionEvent propertyName Property

CSS reference: CSS3 transition Property

CSS reference: CSS3 transition-duration Property

Event Object

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