This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The windowAttribution read-only property of the PerformanceScriptTiming interface returns an enumerated value describing the relationship of the container (i.e., either the top-level document or an <iframe>) in which the long animation frame (LoAF)-causing script was executed, relative to the window running the current document.
An enumerated value, which can be one of:
"ancestor"The current document is a descendant of the document in which the script was executed, embedded inside it in an <iframe>.
"descendant"The script was executed in a descendant document embedded inside the current document in an <iframe>.
"other"The location of the document the script was executed in could not be determined.
"same-page"The script was executed in a version of the current document embedded within the current document in an <iframe>.
"self"The script was executed in the current document.
See Long animation frame timing for examples related to the Long Animation Frames API.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
windowAttribution |
123 | 123 | No | 109 | No | 123 | No | 82 | No | 27.0 | 123 | No |
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceScriptTiming/windowAttribution