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Objects · medium

26. Prototype Chain & Object Inheritance

Prototypal inheritance and Object.create.

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Every object has an internal link to its prototype (`[[Prototype]]`). When accessing properties, the engine traverses the chain until found or `null` is reached.

js
const proto = { greet() { return "hello"; } };
const obj = Object.create(proto);

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  1. 1. What terminates the JavaScript prototype chain?

  2. 2. How do you create an object without a prototype?

  3. 3. What does Object.hasOwn(obj, 'prop') check?

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