Day 6: JavaScript Dates in JavaScript | 10 Days Of JavaScript Solutions | HackerRank Programming Solutions [💯Correct]

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Introduction To JavaScript

JavaScript is a lightweight, cross-platform, and interpreted scripting language. It is well-known for the development of web pages, many non-browser environments also use it. JavaScript can be used for Client-side developments as well as Server-side developments. JavaScript contains a standard library of objects, like Array, Date, and Math, and a core set of language elements like operators, control structures, and statements.

Advantages of JavaScript

The merits of using JavaScript are −

  • Less server interaction − You can validate user input before sending the page off to the server. This saves server traffic, which means less load on your server.
  • Immediate feedback to the visitors − They don’t have to wait for a page reload to see if they have forgotten to enter something.
  • Increased interactivity − You can create interfaces that react when the user hovers over them with a mouse or activates them via the keyboard.
  • Richer interfaces − You can use JavaScript to include such items as drag-and-drop components and sliders to give a Rich Interface to your site visitors.

Link for the ProblemDay 6: JavaScript Dates – Hacker Rank Solution

Day 6: JavaScript Dates – Hacker Rank Solution



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


Given a date string, , 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, , denoting the number of dates to check.
Each line  of the  subsequent lines contains a date in MM/DD/YYYY format; each date denotes some  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 .

Sample Input 0


Sample Output 0


Explanation 0

The function is called for the following  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 – Hacker Rank Solution
function getDayName(dateString) {
  let dayName;
  const days = [
  dayName = days[new Date(dateString).getUTCDay()];
  return dayName;

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