XRJointSpace: jointName property
The read-only jointName property of the XRJointSpace interface contains the name of the joint it tracks.
Value
A string indicating the name of the joint. See the list of hand joints on the XRHand page.
Examples
Getting the 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"
    }
  }
}
Specifications
| Specification | 
|---|
| WebXR Hand Input Module - Level 1  # dom-xrjointspace-jointname  | 
Browser compatibility
BCD tables only load in the browser