I have var ar = [1, 2, 3, 4, 5] and want some function getSubarray(array, fromIndex, toIndex), that result of call getSubarray(ar, 1, 3) is new array [2, 3, 4].
var ar = [1, 2, 3, 4, 5]
getSubarray(array, fromIndex, toIndex)
getSubarray(ar, 1, 3)
[2, 3, 4]