JS Built-ins
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ArrayArray.prototype.slicebeginner

Array.prototype.slice() — basic slice

📖 Usage Example
const arr = [1, 2, 3, 4, 5]
arr.slice(1, 4)  // → [2, 3, 4]  (indices 1, 2, 3)

Use slice(start, end) to extract a sub-array without modifying the original.

Array.prototype.slice()

Array.prototype.slice(start, end) returns a shallow copy of a portion of an array from start (inclusive) to end (exclusive). It does not mutate the original.

Challenge: Implement getSlice(arr, start, end) that returns arr.slice(start, end).

getSlice([1, 2, 3, 4, 5], 1, 3) // → [2, 3]
getSlice([10, 20, 30], 0, 2)    // → [10, 20]
💡 Hints (2)
  • • `slice(start, end)` does not include the element at `end`.
  • • The original array is never mutated — `slice` always returns a new array.