Add AM PM suffix to an hour

JavaScript

// `h` is an hour number between 0 and 23
const suffixAmPm = (h) => `${h % 12 === 0 ? 12 : h % 12}${h < 12 ? 'am' : 'pm'}`

TypeScript

const suffixAmPm = (h: number): string => `${h % 12 === 0 ? 12 : h % 12}${h < 12 ? 'am' : 'pm'}`

Examples

suffixAmPm(0) // '12am'
suffixAmPm(5) // '5am'
suffixAmPm(12) // '12pm'
suffixAmPm(15) // '3pm'
suffixAmPm(23) // '11pm'