[Codewars] Human Readable Time (5 kyu) / JavaScript

https://www.codewars.com/kata/52685f7382004e774f0001f7

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DESCRIPTION:

Write a function, which takes a non-negative integer (seconds) as input and returns the time in a human-readable format (HH:MM:SS)

• HH = hours, padded to 2 digits, range: 00 - 99
• MM = minutes, padded to 2 digits, range: 00 - 59
• SS = seconds, padded to 2 digits, range: 00 - 59

The maximum time never exceeds 359999 (99:59:59)

You can find some examples in the test fixtures.

 

코드

function humanReadable (seconds) {
  const h = parseInt(seconds / 3600);
  const m = parseInt(seconds % 3600 / 60);
  const s = (seconds % 60);
  return fm(h) + ':' + fm(m) + ':' + fm(s);
}

function fm(num){
  return num.toString().padStart(2, '0');
}