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XRSession: domOverlayState 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.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The read-only domOverlayState property of an immersive-ar XRSession provides information about the DOM overlay, if the feature is enabled.

Value

Returns null if the DOM overlay feature is not supported or not enabled or an object containing information about the DOM overlay state with the following properties:

type

A string indicating how the DOM overlay is being displayed. Possible values:

screen: The overlay is drawn on the entire screen-based device (for handheld AR devices).
head-locked: The overlay is drawn at a head-locked UI that fills the renderable viewport and follows the user's head movement.
floating: The overlay appears as a rectangle floating in space that's kept in front of the user. It doesn't necessarily fill up the entire space and/or is strictly head-locked.

Examples

Checking which DOM overlay got enabled

if (session.domOverlayState) {
  console.log(session.domOverlayState.type);
} else {
  console.log("DOM overlay not supported or enabled!");
}

Specifications

Specification
WebXR DOM Overlays Module> # dom-xrsession-domoverlaystate>

Browser compatibility