Code Golf · #34 · 2026-05-08
Square every number
Difficulty 1/3 · JavaScript
How to play
Write a JavaScript function body that passes all test cases using the fewest characters. Run against examples first, then submit for the full test suite. Eagle < Birdie < Par.
Given an array of numbers, return a new array with each number squared.
Examples
f([1,2,3]) → 1,4,9
f([-2,0,3]) → 4,0,9
Loading your progress...
Your code (function body — receives input)
function(input) { 0 chars
}
Write the shortest JavaScript function body that passes all tests · Back to hub