10 Javascript Exercises with Arrays

Basically, this article could be useful for junior and middle Javascript software engineers. I prepared ten exercises with arrays, which I hope will help you to improve your coding skills.

Each task provided has an explanation, expected result, and solution. I do not affirm my solutions are the best ways to solve each of the exercises, but I believe they could help you to find some new ideas if you stuck.

Also, I would like to mention that I won’t handle all the error cases, like passing undefined, null, or wrong data types. I provide a basic solution, not writing a library for production.

You can start in your repository or clone mine. In that repository, you can find a full list of exercises and solutions. Also, you can easily check your solutions with pre-created tests. Link: https://github.com/andrewborisov/javascript-practice.

1. Fill. Write a function that creates a new array with given values

/** 
  * Task description: Write a method that creates a new array with given values 
  * Expected Result: (3, 'a') => ['a', 'a', 'a'] 
  * Task Complexity: 1 of 5 
  * @param {number} arraySize - size of array 
  * @param {?} value - value to fill 
  * @returns {Array} 
*/
const fill = (arraySize, value) => {
 throw new Error('Put your solution here');
}