[removed] convert 24-hour time-of-day string to 12-hour time with AM/PM and no timezone

Question

The server is sending a string in this format: 18:00:00. This is a time-of-day value independent of any date. How to convert it to 6:00PM in Javasc

Answer 1

Here's a few variations that will work.

const oneLiner = (hour = "00", min = "00", sec = "00") => `${(hour % 12) || 12}:${("0" + min).slice(-2)}:${sec} ${(hour < 12) ? 'am' : 'pm'}`
console.log('oneliner', oneLiner(..."13:05:12".split(":")))



const oneLinerWithObjectInput = ({hour = "00", min = "00", sec = "00"} = {}) => `${(hour % 12) || 12}:${("0" + min).slice(-2)}:${sec} ${(hour < 12) ? 'am' : 'pm'}`
console.log('onelinerWithObjectInput', oneLinerWithObjectInput({
   hour: "13:05:12".split(":")[0],
   min: "13:05:12".split(":")[1],
   sec: "13:05:12".split(":")[2]
}))


const multiLineWithObjectInput = ({hour = "00", min = "00", sec = "00"} = {}) => {
   const newHour = (hour % 12) || 12
       , newMin  = ("0" + min).slice(-2)
       , ampm    = (hour < 12) ? 'am' : 'pm'
   return `${newHour}:${newMin}:${sec} ${ampm}`
}
console.log('multiLineWithObjectInput', multiLineWithObjectInput({
   hour: "13:05:12".split(":")[0],
   min: "13:05:12".split(":")[1],
   sec: "13:05:12".split(":")[2]
}))