Clone an array

Create a new array without copying the objects inside it.

JavaScript Version 1.0.0 · MIT · .md

function clone(values) { return [...values]; }

Input & expected output

[
  1,
  2,
  3
]

[
  1,
  2,
  3
]

The edge case

[]

[]

Know the limits

• This is a shallow copy: nested objects keep the same identity.
• Use structuredClone when a supported deep copy is actually required.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Keep exploring

• Remove duplicate values — Keep the first occurrence of each value, in its original order.
• Flatten a nested array — Turn a nested array into one sequence of values.
• Split an array into chunks — Build consecutive chunks without changing the original array.