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Discussion on: Is `this` in Javascript bad?

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Steven Liao • • Edited

One thing about the pattern that your friend advocates is that it would be harder to use instanceof.

function Car() {
  const car = {};

  car.position = 0;

  car.move = () => car.position++;

  return car;
}

const car = new Car();

console.log(car instanceof Car); // false

You would have to do:

Object.setPrototypeOf(car, Car.prototype);

console.log(car instanceof Car); // true