how to get datetime in javascript code example

Example 1: get date javascript

getDate() in javascript only returns the day as number (1-31)

Example
var d = new Date();
document.getElementById("demo").innerHTML = d.getDate();

Output:
22

Method	            Description
getFullYear()	    Get the year as a four digit number (yyyy)
getMonth()	        Get the month as a number (0-11)
getDate()	        Get the day as a number (1-31)
getHours()	        Get the hour (0-23)
getMinutes()	    Get the minute (0-59)
getSeconds()	    Get the second (0-59)
getMilliseconds()	Get the millisecond (0-999)
getTime()	        Get the time (milliseconds since January 1, 1970)
getDay()	        Get the weekday as a number (0-6)
Date.now()	        Get the time. ECMAScript 5.

Example 2: get time from date javascript

const handleTime = (dataD) => {
    let data= new Date(dataD)
    let hrs = data.getHours()
    let mins = data.getMinutes()
    if(hrs<=9)
       hrs = '0' + hrs
    if(mins<10)
      mins = '0' + mins
    const postTime= hrs + ':' + mins
    return postTime
  }