Async/Await in Node.js — Node.js Technical Interview Questions & Answers

Async/Await in Node.js

Async/Await in Node.js

  • Async/Await (in node js) is a Node.js topic. In plain words you use it for fetch a user then marks in an API handler. Don’t start with a slogan — start with that picture.
  • Smallest example: async function + try/catch. Type it, run it, and say what you see. If you can do that from memory, you know Async/Await (in node js).
  • From the example next to this theory: Async/Await in Node.
  • Trap: unhandled rejection. Fix that before you talk about advanced Node.js.
  • Viva: what is Async/Await (in node js)? Then show async function + try/catch. Then name the trap.

Technical Interview Tip: What is Async/Await (in node js)? Show this: async function + try/catch. Trap: unhandled rejection.

Code Examples for Async/Await in Node.js

Async/Await in Node.js — working example

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

(async () => {
  console.log("start");
  await wait(50);
  console.log("done");
})();

Async/Await in Node.js — async/await sits on Promises — cleaner than nested callbacks.

How to Explain Async/Await in Node.js to an Interviewer

What is Async/Await (in node js)?

Used for fetch a user then marks an API handler Not just the heading

Give one small example of Async/Await (in node js).

async function + try/catch Async/Await in Node

What mistake do beginners make with Async/Await (in node js)?

unhandled rejection Show the fix

Where do you use Async/Await (in node js)?

an API handler fetch a user then marks