Day 6: JavaScript Dates | 10 Days of JavaScript – Hacker Rank Solution

Day 6: JavaScript Dates | 10 Days of JavaScript – Hacker Rank Solution: Hey Guy’s In this post we are solving Day 6: JavaScript Dates which is a part of 10 Days of JavaScript Series.

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Day 6: JavaScript Dates | 10 Days of JavaScript – Hacker Rank Solution

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In this challenge, we learn about JavaScript Dates. Check out the attached tutorial for more details.


Given a date string, dataString, in the format MM/DD/YYYY, find and return the day name for that date. Each day name must be one of the following strings: SundayMondayTuesdayWednesdayThursdayFriday, or Saturday. For example, the day name for the date 12/07/2016 is Wednesday.

Input Format

Locked stub code in the editor reads the following input from stdin:
The first line contains an integer, d, denoting the number of dates to check.
Each line i of the d subsequent lines contains a date in MM/DD/YYYY format; each date denotes some dateString that is passed to the function.


  • It is guaranteed that the input only consists of valid dates.

Output Format

The function must return a string denoting the day of the week corresponding to the date denoted by dateString.

Sample Input 0




Sample Output 0



Explanation 0

The function is called for the following d = 2 dates:

  1. The date 10/11/2009 was a Sunday, so we return Sunday.
  2. The date 11/10/2010 was a Wednesday, so we return Wednesday.

Day 6: JavaScript Dates | 10 Days of JavaScript – Hacker Rank Solution

'use strict';
let inputString = '';
let currentLine = 0;
process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
process.stdin.on('end', _ => {
    inputString = inputString.trim().split('\n').map(string => {
        return string.trim();
function readLine() {
    return inputString[currentLine++];
// The days of the week are: "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
function getDayName(dateString) {
    const date = new Date(dateString);
    const options = {
      weekday: 'long'
    return new Intl.DateTimeFormat('en-Us', options).format(date);
function main() {
    const d = +(readLine());
    for (let i = 0; i < d; i++) {
        const date = readLine();

Disclaimer: The above Problem (Day 6: JavaScript Dates) 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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