JavaScript: Get every n^th element in a given array

JavaScript fundamental (ES6 Syntax): Exercise-21 with Solution

Write a JavaScript program to get every n^th element in a given array.

• Use Array.prototype.filter() to create a new array that contains every nth element of a given array.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const every_nth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
console.log(every_nth([1, 2, 3, 4, 5, 6], 1));
console.log(every_nth([1, 2, 3, 4, 5, 6], 2));
console.log(every_nth([1, 2, 3, 4, 5, 6], 3));
console.log(every_nth([1, 2, 3, 4, 5, 6], 4));

Sample Output:

[1,2,3,4,5,6]
[2,4,6]
[3,6]
[4]

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-21 by w3resource (@w3resource) on CodePen.

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