/Web APIs


The XRJointSpace interface is an XRSpace and represents the position and orientation of an XRHand joint.

EventTarget XRSpace XRJointSpace

Instance properties

XRJointSpace.jointName Read only

The name of the joint that is tracked. See XRHand for possible hand joint names.


Using XRJointSpace objects

You can use an XRJointSpace object and an XRReferenceSpace to get an XRJointPose by calling XRFrame.getJointPose().

  .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"); // XRJointSpace
      indexFingerTipJoint.jointName; // "index-finger-tip"
      frame.getJointPose(indexFingerTipJoint, referenceSpace); // XRJointPose


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
XRJointSpace No
93Hololens 2 only.
No No No No No No No No No No
jointName No
93Hololens 2 only.
No No No No No No No No No No

See also

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