XRJointPose

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The XRJointPose interface is an XRPose with additional information about the size of the skeleton joint it represents.

XRPose XRJointPose

Instance properties

XRJointPose.radius Read only

The radius (distance from skin) for a joint.

Examples

Using XRJointPose objects

Call XRFrame.getJointPose() with an XRJointSpace and an XRReferenceSpace to get an XRJointPose object.

js
navigator.xr
  .requestSession({ optionalFeatures: ["hand-tracking"] })
  .then(/* … */);

function renderFrame(session, frame) {
  // …

  for (const inputSource of session.inputSources) {
    if (inputSource.hand) {
      const indexFingerTipJoint = inputSource.hand.get("index-finger-tip");
      frame.getJointPose(indexFingerTipJoint, referenceSpace); // XRJointPose
    }
  }
}

Specifications

Specification
WebXR Hand Input Module - Level 1
# xrjointpose-interface

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
XRJointPose
Chrome – Full support
Chrome 131 (Release date: 2024-11-12)
footnote Full support
Edge – No support
Edge 93 – 110 (Release date: 2021-09-02)
footnote Removed in 111 and later
footnote Hololens 2 only.
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 116 (Release date: 2025-01-08)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 131 (Release date: 2024-11-12)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 87 (Release date: 2025-01-22)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 29 (Release date: 2025-10-25)
footnote Full support
WebView Android – Full support
WebView Android 131 (Release date: 2024-11-12)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
radius
Chrome – Full support
Chrome 131 (Release date: 2024-11-12)
footnote Full support
Edge – No support
Edge 93 – 110 (Release date: 2021-09-02)
footnote Removed in 111 and later
footnote Hololens 2 only.
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 116 (Release date: 2025-01-08)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 131 (Release date: 2024-11-12)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 87 (Release date: 2025-01-22)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 29 (Release date: 2025-10-25)
footnote Full support
WebView Android – Full support
WebView Android 131 (Release date: 2024-11-12)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

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

Full support
Full support
No support
No support

See also