Checks if the elements of an array are less than (or equal to) a number or the elements of another array, and then returns an array with the elements that pass the check.
Parameters
arr: number[]
The array
arrORnum: number|number[]
The array or number
OptionalincludeEnd: boolean = false
Whether the check is "less than" (false) or "less than or equal to" (true)
Checks if the elements of an array are less than (or equal to) a number or the elements of another array, and then returns an array with the elements that pass the check.