Day 4: Classes | 10 Days of JavaScript – Hacker Rank Solution

Day 4: Classes | 10 Days of JavaScript – Hacker Rank Solution: Hey Guy’s In this post we are solving Day 4: Classes which is a part of 10 Days of JavaScript Series.

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Day 4: Classes | 10 Days of JavaScript – Hacker Rank Solution

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In this challenge, we practice using JavaScript classes. Check the attached tutorial for more details.


Create a Polygon class that has the following properties:

  • constructor that takes an array of integer values describing the lengths of the polygon’s sides.
  • perimeter() method that returns the polygon’s perimeter.

Locked code in the editor tests the Polygon constructor and the perimeter method.

Note: The perimeter method must be lowercase and spelled correctly.

Input Format

There is no input for this challenge.

Output Format

The perimeter method must return the polygon’s perimeter using the side length array passed to the constructor.


Consider the following code:

// Create a polygon with side lengths 3, 4, and 5

let triangle = new Polygon([3, 4, 5]);

// Print the perimeter


When executed with a properly implemented Polygon class, this code should print the result of 3 + 4 + 5 = 12.

Day 4: Classes | 10 Days of JavaScript – Hacker Rank Solution

 * Implement a Polygon class with the following properties:
 * 1. A constructor that takes an array of integer side lengths.
 * 2. A 'perimeter' method that returns the sum of the Polygon's side lengths.
class Polygon{
        this.sides = sides
    perimeter() {
        return this.sides.reduce(function add(a,b){return a+b;})
const rectangle = new Polygon([10, 20, 10, 20]);
const square = new Polygon([10, 10, 10, 10]);
const pentagon = new Polygon([10, 20, 30, 40, 43]);

Disclaimer: The above Problem (Day 4: Classes) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.


10 days of javascript hackerrank
Answer: Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. 10 Days of JavaScript

How can I learn JavaScript in 10 days?
Answer: Many free and paid courses and tutorials are available to learn JavaScript. For in-depth knowledge, you can also purchase a few good books like A Smarter Way to Learn JavaScript and Effective JavaScript: 68 Specific Ways to Harness the Power of JavaScript. However, to start working on projects, you need only a little theory and more hands-on, so we recommend you to take up tutorials and short courses that will get you onboard quickly.

Does hacker rank have JavaScript?
Answer: They might not have a specific practice tutorial for it. But you can solve any of their general problems using Javascript.

What is HackerRank JS?
Answer: The HackerRank Skills Certification Test is a standardized assessment to help developers prove their coding skills.

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