Document.timeline

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

The timeline readonly property of the Document interface represents the default timeline of the current document. This timeline is a special instance of DocumentTimeline that is automatically created on page load. 

This timeline is unique to each document and persists for the lifetime of the document including calls to Document.open().

The time values for this timeline are calculated as a fixed offset from the global clock such that the zero time corresponds to the navigationStart moment plus a signed delta known as the origin time. Prior to establishing the navigationStart moment, the document timeline is inactive.

Note: A document timeline that is associated with a non-active document is also considered to be inactive.

Syntax

var pageTimeline = document.timeline;
var thisMoment = pageTimeline.currentTime;

Value

A DocumentTimeline object.

Specifications

Specification Status Comment
Web Animations
The definition of 'document.timeline' in that specification.		 Working Draft Editor's draft.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
timeline
Experimental
Chrome No support No
Notes
No support No
Notes
Notes Currently Chrome Canary only
Edge No support NoFirefox Full support 75IE Full support YesOpera No support NoSafari Full support 13.1WebView Android No support NoChrome Android No support No
Notes
No support No
Notes
Notes Currently Chrome Canary only
Firefox Android Full support 63
Disabled
Full support 63
Disabled
Disabled From version 63: this feature is behind the dom.animations-api.timelines.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support 32 — 63
Disabled
Disabled From version 32 until version 63 (exclusive): this feature is behind the dom.animations-api.core.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android No support NoSafari iOS Full support 13.4Samsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also