var d= new Date();
d.getFullYear();//Get the year as a four digit number (yyyy)
d.getMonth();//Get the month as a number (0-11)
d.getDate();//Get the day as a number (1-31)
d.getHours();//Get the hour (0-23)
d.getMinutes();//Get the minute (0-59)
d.getSeconds();//Get the second (0-59)
d.getMilliseconds();//Get the millisecond (0-999)
d.getTime();//Get the time (milliseconds since January 1, 1970)

var d= new Date();
d.getFullYear();//Get the year as a four digit number (yyyy)
d.getMonth();//Get the month as a number (0-11)
d.getDate();//Get the day as a number (1-31)
d.getHours();//Get the hour (0-23)
d.getMinutes();//Get the minute (0-59)
d.getSeconds();//Get the second (0-59)
d.getMilliseconds();//Get the millisecond (0-999)
d.getTime();//Get the time (milliseconds since January 1, 1970)

var currentDate = new Date();
var dateFromTimeStamp= new Date(1560807962);
var dateFromString = new Date('December 17, 1995 03:24:00');
//new Date(year, month, day, hours, minutes, seconds, milliseconds)
//0= Jan, 11=Dec
var dateFromYearMonthDay = new Date(2018, 11, 26, 0, 0, 0, 0);

function getDate()
{
	let  today 		= new Date();
	let  dd 		= String(today.getDate()).padStart(2, '0');
	let  mm 		= String(today.getMonth() + 1).padStart(2, '0'); //janvier = 0
	let  yyyy 		= today.getFullYear();

	return dd + '/' + mm + '/' + yyyy;
}

var today = new Date();
var year = today.getFullYear();

var element = document.getElementById('main');
element.innerHTML = `<p>Today's date is ${today}</p>`;