JavaScript DateConvert AM PM to Military and Miltity to AM PM

gistfile1.txt

function getDateObjectFromTimeOnlyPart(default_date, timeString) {
    // default_date : date object, timeString format "11:00" or "03:00 pm"
    var time = new Date(default_date);
    var hhmm = undefined;
    var ampm = undefined;
    if(_.str.contains(timeString.toLowerCase(), "m")) {
        // am/pm format ex) 04:00 am
        var timeStringArray = timeString.split(" ");
        hhmm = (timeStringArray[0]).split(':'); 
        ampm = timeStringArray[1].toLowerCase();
        if(ampm == "am" && hhmm[0]=="12") {
            hhmm[0] = "00";
        }
    } else {
        hhmm = timeString.split(':');    
    }
    
    time.setHours(Number(hhmm[0]) + ((!_.isUndefined(ampm) && ampm == "pm" && Number(hhmm[0])!=12)?12:0));
    time.setMinutes(Number(hhmm[1]));
    time.setSeconds(0);
    return time;
}

function getAMPMFormatTimeFromString(strTime) {
    // ex) 13:00
    if(_.str.contains(strTime.toLowerCase(), "M")) {
        return strTime;
    } else {
        var hhmm = strTime.split(":");
        var now = new Date();
        now.setHours(Number(hhmm[0]));
        now.setMinutes(Number(hhmm[1]));
        return now.toString("hh:mm tt").toUpperCase();
    }
}