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var setX = new Set(); setX.add(5); setX.add(6); setX.add(7); setX.add(8); var setY = new Set(); setY.add(6); setY.add(7); setY.add(9); var setZ = setX.difference(setY); console.log(setZ.values()); //returns ["5","8"]
Also see: Tab Triggers