JS Practice — Built-in Objects

Array.prototype.splice() — capture removed elements

📖 Usage Example

const arr = [10, 20, 30, 40]
const removed = arr.splice(1, 2)  // → [20, 30]
arr  // → [10, 40]

splice() returns an array of the removed elements — capture it when you need those values.

Array.prototype.splice() — return value

splice returns an array of the removed elements. This is useful when you need to both remove and capture a range of values.

Challenge: Implement getRemovedElements(arr, start, count) that returns the array of removed elements (the return value of splice).

getRemovedElements([1, 2, 3, 4, 5], 1, 2) // → [2, 3]
getRemovedElements([10, 20, 30], 0, 1)     // → [10]

💡 Hints (2)