JS OOPs MCQ — JS Technical Interview Questions & Answers

5 quick multiple-choice questions on classes and prototypes.

JS OOPs MCQ

  • OOPs MCQ (js) is a JS topic. In plain words you use it for a short OOPs MCQ js example in a script in the browser. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest OOPs MCQ js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know OOPs MCQ (js).
  • From the example next to this theory: 5 quick multiple-choice questions on classes and prototypes.
  • Trap: only saying “OOPs MCQ js” with no example. Fix that before you talk about advanced JS.
  • Viva: what is OOPs MCQ (js)? Then show the smallest OOPs MCQ js example you can type. Then name the trap.

Technical Interview Tip: What is OOPs MCQ (js)? Show this: the smallest OOPs MCQ js example you can type. Trap: only saying “OOPs MCQ js” with no example.

Code Examples for JS OOPs MCQ

JS OOPs MCQ — working example

class Animal {
  static kingdom = "Animalia";
  #secret = "private";
  constructor(name) { this.name = name; }
  speak() { return this.name + " speaks"; }
  reveal() { return this.#secret; }
}
class Dog extends Animal {
  speak() { return super.speak() + " (bark)"; }
}
const d = new Dog("Rex");
console.log(d.speak(), Animal.kingdom, d.reveal());
console.log(Object.getPrototypeOf(d) === Dog.prototype);

JS OOPs MCQ — oOP in JS: constructors, prototypes, inheritance, statics, and private fields (#).

How to Explain JS OOPs MCQ to an Interviewer

What is OOPs MCQ (js)?

Used for a short OOPs MCQ js example a script in the browser Not just the heading

Give one small example of OOPs MCQ (js).

the smallest OOPs MCQ js example you can type 5 quick multiple-choice questions on classes and prototypes

What mistake do beginners make with OOPs MCQ (js)?

only saying “OOPs MCQ js” with no example Show the fix

Where do you use OOPs MCQ (js)?

a script in the browser a short OOPs MCQ js example