YuriBrunetto

const myArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
const chunkSize = 4
const chunks = myArray.reduce((ar, it, i) => {
  const ix = Math.floor(i / chunkSize)

  if (!ar[ix]) ar[ix] = []

  ar[ix].push(it)

  return ar

YuriBrunetto

const $ = document.querySelector.bind(document)

// id
let divs = [
  $("#div"),
  $("#input")
]

// class
let other = [