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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
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
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | No support | 48 (48)[1] | No support | No support | No support |
| Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|
| Basic support | No support | No support | No support | No support | No support | No support | No support | No support |
[1] Currently supported only in Firefox Nightly.