How to create windowed slice of array in JavaScript?

Question

I\'m looking for an array method implementation named Array.window(n) that invoked on an array with parameter n, would give a contiguous overlappin

Answer 1

I think this would suffice:

function arrayWindow(array, n) {
  if (array.length < n || n <= 0) {
    return []
  }

  let arrayLength = array.length
  let result = []
  for (let i = 0; i < arrayLength; i++) {
    let slicedArray = array.slice(i, n+i)
    if (slicedArray && slicedArray.length === n) {
      result.push(slicedArray)
      continue
    }
    break
  }
  return result
}

let arr = [1, 2, 3, 4, 5, 6]
console.log(arrayWindow(arr, 2))
console.log(arrayWindow(arr, 3))
console.log(arrayWindow(arr, 4))
console.log(arrayWindow(arr, 5))
console.log(arrayWindow(arr, 10))
console.log(arrayWindow(arr, 0))