Time Conversion HackerRank Challenge

timeConversion.js

function timeConversion(s) {
    // Write your code here
    // if hour is 12am, return 00
    // if hour is between 1am to 11:59am, return 1 to 11:59
    
    
    // if time is 12pm, return 12
    // if hour is between 1pm to 11:59pm, return 1 + 12 to 11:59 + 12
    
    //  Military Hour
    let militaryHour = '';
    let hour = s.substring(0, 2);
    let amPM = s.charAt(8)

    console.log(hour, amPM)
    
    if (amPM == 'A') {
        if (hour == '12') {
            militaryHour = '00';
        } else {
            militaryHour = hour
        }
    } else {
        if (hour == '12') {
            militaryHour = '12';
        } else {
            militaryHour = parseInt(hour, 10) + 12
        }
    }
    
    return militaryHour + s.substring(2, 8)
}