var today = new Date();
var time = today.getHours() + ":" + today.getMinutes() ;
var dateTime = date+' '+time;
let myDate = new Date('2019-11-24 10:33:18');
let hour = myDate.getHours(); // hour = 10
const date = new Date();
const hhmmss = date.toLocaleTimeString();
console.log( hhmmss ); // 12:34:21
var myDate = new Date().toTimeString().replace(/.*(d{2}:d{2}:d{2}).*/, "$1");
console.log(myDate)
//using regex
String.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(sec_num / 3600);
var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
var seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours < 10) {hours = "0"+hours;}
if (minutes < 10) {minutes = "0"+minutes;}
if (seconds < 10) {seconds = "0"+seconds;}
return hours+':'+minutes+':'+seconds;
}