Window: fence property

Limited availability

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 fence read-only property of the Window interface returns a Fence object instance for the current document context.

Fence objects are only available to documents embedded inside <fencedframe>s (loaded via FencedFrameConfigs) or <iframe>s (loaded via opaque URNs).

Note: See How do <fencedframe>s work? for some description around FencedFrameConfigs and opaque URNs.

Value

A Fence object instance, or null if the document context does not have access to a Fence object.

Examples

js
window.fence.reportEvent({
  eventType: "click",
  eventData: JSON.stringify({ clickX: "123", clickY: "456" }),
  destination: ["buyer", "seller"],
});

Specifications

Specification
Fenced Frame
# dom-window-fence

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
fence
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.

See also