JS Promises & Async MCQ — JS Technical Interview Questions & Answers

5 quick multiple-choice questions on async JS.

JS Promises & Async MCQ

  • Promises & Async MCQ (js) is a JS topic. In plain words you use it for GET /api/marks in the browser. Don’t start with a slogan — start with that picture.
  • Smallest example: fetch + await + try/catch. Type it, run it, and say what you see. If you can do that from memory, you know Promises & Async MCQ (js).
  • From the example next to this theory: 5 quick multiple-choice questions on async JS.
  • Trap: no catch → silent fail. Fix that before you talk about advanced JS.
  • Viva: what is Promises & Async MCQ (js)? Then show fetch + await + try/catch. Then name the trap.

Technical Interview Tip: What is Promises & Async MCQ (js)? Show this: fetch + await + try/catch. Trap: no catch → silent fail.

Code Examples for JS Promises & Async MCQ

JS Promises & Async MCQ — working example

// Category warm-up: core JS building blocks
const tags = new Set(["js", "js", "dom"]);
const scores = new Map([["Ada", 10]]);
scores.set("Ada", 11);

function later(ms, value) {
  return new Promise((resolve) => setTimeout(() => resolve(value), ms));
}

(async () => {
  console.log([...tags], scores.get("Ada"));
  console.log(await later(10, "ready"));
})();

JS Promises & Async MCQ — this category groups related JS topics — practice the small demos inside each leaf topic next.

How to Explain JS Promises & Async MCQ to an Interviewer

What is Promises & Async MCQ (js)?

Used for GET /api/marks the browser Not just the heading

Give one small example of Promises & Async MCQ (js).

fetch + await + try/catch 5 quick multiple-choice questions on async JS

What mistake do beginners make with Promises & Async MCQ (js)?

no catch → silent fail Show the fix

Where do you use Promises & Async MCQ (js)?

the browser GET /api/marks