The value of 'id' is consistently unspecified when using Leap Motion

I am new to programming with Leap motion and I have a specific question about my code:

    Leap.loop(function(obj) {
       var hands = obj.hands.map(function(d) {
        return {
          id: d.id,
          length: d.length,
          palmPositionX: d.palmPosition[0],
          palmPositionY: d.palmPosition[1],
          palmPositionZ: d.palmPosition[2]
        }

      });
 console.log(hands.length); //Output is correct
 console log(hands.id); //Why is this undefined?

     //handParcoords.data(hands).render(); //This line successfully renders a chart using all parameters

    });

Could someone please help me understand why the length property works, but id, palmPositionX, and palmPositionY do not?

Answer №1

hands is a collection of elements, meaning you must specify a particular element in the array to retrieve its id

console.log(hands[0].id);

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