Find the maximum item of an array

Spread the numbers into Math.max.

JavaScript Version 1.0.0 · MIT · .md

function max(values) { return Math.max(...values); }

Input & expected output

[
  8,
  -2,
  5
]

8

The edge case

[
  7
]

7

Know the limits

• An empty array returns -Infinity (null in JSON); check the length first.

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

• Clone an array — Create a new array without copying the objects inside it.
• 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.