Arrow Function vs Regular Function — JS Technical Interview Questions & Answers

Side-by-side comparison table.

Arrow Function vs Regular Function

  • Arrow Function vs Regular Function (diff) is a JS topic. In plain words you use it for add(a, b) in a checkout total. Don’t start with a slogan — start with that picture.
  • Smallest example: function add / const add = () =>. Type it, run it, and say what you see. If you can do that from memory, you know Arrow Function vs Regular Function (diff).
  • From the example next to this theory: Side-by-side comparison table.
  • Trap: this surprise in arrow vs function. Fix that before you talk about advanced JS.
  • Viva: what is Arrow Function vs Regular Function (diff)? Then show function add / const add = () =>. Then name the trap.

Technical Interview Tip: What is Arrow Function vs Regular Function (diff)? Show this: function add / const add = () =>. Trap: this surprise in arrow vs function.

Code Examples for Arrow Function vs Regular Function

Arrow Function vs Regular Function — working example

const add = (a, b) => a + b;
const name = "Ada";
console.log(`Hi, ${name}!`);

const user = { name: "Lin", city: "Pune", skills: ["CSS"] };
const { city, ...rest } = user;
const skills = [...user.skills, "JS"];
console.log(add(2, 3), city, rest, skills);
console.log(user.profile?.bio ?? "n/a");

Arrow Function vs Regular Function — modern JS: arrows, template strings, destructuring, spread/rest, ?. and ?? for safe defaults.

How to Explain Arrow Function vs Regular Function to an Interviewer

What is Arrow Function vs Regular Function (diff)?

Used for add(a, b) a checkout total Not just the heading

Give one small example of Arrow Function vs Regular Function (diff).

function add / const add = () => Side-by-side comparison table

What mistake do beginners make with Arrow Function vs Regular Function (diff)?

this surprise in arrow vs function Show the fix

Where do you use Arrow Function vs Regular Function (diff)?

a checkout total add(a, b)