The read-only jointName property of the XRJointSpace interface contains the name of the joint it tracks.
The read-only jointName property of the XRJointSpace interface contains the name of the joint it tracks.
A string indicating the name of the joint. See the list of hand joints on the XRHand page.
jointName
Given a XRJointSpace, the jointName property will contain the hand joint name.
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"); // XRJointSpace indexFingerTipJoint.jointName; // "index-finger-tip" } } }
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jointName | 
No | 93–111Hololens 2 only. | 
No | No | No | No | No | No | No | No | No | No | 
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    https://developer.mozilla.org/en-US/docs/Web/API/XRJointSpace/jointName