/Web APIs


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.


Using XRJointPose objects

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

  .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


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
XRJointPose No
93Hololens 2 only.
No No No No No No No No No No
radius No
93Hololens 2 only.
No No No No No No No No No No

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.