30-seconds-of-code/snippets/everyNth.md

everyNth

Returns every nth element in an array.

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

const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);

everyNth([1,2,3,4,5,6], 2) // [ 2, 4, 6 ]