Date.prototype.setFullYear() — JS Technical Interview Questions & Answers

Sets the year on a Date object.

Date.prototype.setFullYear()

  • Date.prototype.setFullYear() is a JS topic. In plain words you use it for class Student in a tiny OOP file. Don’t start with a slogan — start with that picture.
  • Smallest example: class Student { constructor(name) {} }. Type it, run it, and say what you see. If you can do that from memory, you know Date.prototype.setFullYear().
  • From the example next to this theory: Sets the year on a Date object.
  • Trap: arrow function for a method that needs this. Fix that before you talk about advanced JS.
  • Viva: what is Date.prototype.setFullYear()? Then show class Student { constructor(name) {} }. Then name the trap.

Technical Interview Tip: What is Date.prototype.setFullYear()? Show this: class Student { constructor(name) {} }. Trap: arrow function for a method that needs this.

Code Examples for Date.prototype.setFullYear()

Date.prototype.setFullYear() — working example

// Topic: Date.prototype.setFullYear()
const nums = [1, 2, 3];
const doubled = nums.map((n) => n * 2);
console.log(doubled);
console.log(doubled.reduce((a, b) => a + b, 0));

Date.prototype.setFullYear(): map then reduce on [1, 2, 3]. Say both prints.

How to Explain Date.prototype.setFullYear() to an Interviewer

What is Date.prototype.setFullYear()?

Used for class Student a tiny OOP file Not just the heading

Give one small example of Date.prototype.setFullYear().

class Student { constructor(name) {} } Sets the year on a Date object

What mistake do beginners make with Date.prototype.setFullYear()?

arrow function for a method that needs this Show the fix

Where do you use Date.prototype.setFullYear()?

a tiny OOP file class Student