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

initializeArrayWithRange

Initializes an array containing the numbers in the specified range.

Use Array(end-start) to create an array of the desired length, Array.map() to fill with the desired values in a range. You can omit start to use a default value of 0.

const initializeArrayWithRange = (end, start = 0) =>
  Array.from({ length: end - start }).map((v, i) => i + start);
// initializeArrayWithRange(5) -> [0,1,2,3,4]