JS Built-ins
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ArrayArray.prototype.toSplicedbeginner

Remove Element Immutably

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

Use toSpliced() to remove elements and return a new array, leaving the original intact.

Array.prototype.toSpliced

toSpliced is the immutable version of splice. It returns a new array with elements removed or replaced, leaving the original untouched.

Implement removeImmutable which returns a new array with the element at index removed.

💡 Hints (2)
  • • toSpliced(index, deleteCount) removes deleteCount elements starting at index
  • • Pass 1 as deleteCount to remove exactly one element