create chunk of array with same size

chunks.js

const colors = ['red', 'blue', 'yellow', 'purple', 'green', 'grey', 'brown', 'white', 'black']

function chunkArray(myArray, chunk_size) {
  let index = 0
  let arrayLength = myArray.length
  let tempArray = []
  
  for (index = 0; index < arrayLength; index += chunk_size) {
    let myChunk = myArray.slice(index, index + chunk_size)
    tempArray.push(myChunk)
  }
  
  return tempArray
}

const chunkedArray = chunkArray(colors, 4)

console.log(chunkedArray) // [["red", "blue", "yellow", "purple"], ["green", "grey", "brown", "white"], ["black"]]

// inspired by https://ourcodeworld.com/articles/read/278/how-to-split-an-array-into-chunks-of-the-same-size-easily-in-javascript