Add minutes to current time, JavaScript

Question

I would like to add 20 minutes to the current date. While browsing the messages already posted on this subject, I recovered a piece of code but I can not adapt it. Can you help me ?

// get the current date & time
var dateObj = Date.now();

// I do not understand what these values ​​are
dateObj += 1000 * 60 * 60 * 24 * 3;

// create a new Date object, using the adjusted time
dateObj = new Date(dateObj);

Answer 1

Create a prototype function on Date Object if you want to use it in various places as it will reduce redundancy of code.

Date.prototype.add20minutes = function(){
 return this.setMinutes(this.getMinutes() + 20);
}

Now, you can simply call

var d = new Date();
d.add20minutes(); 

Answer 2

Use this piece of code

var date = new Date();
date.setMinutes(date.getMinutes()+20);

Answer 3

Don't know if setMinutes with values > 60 is defined or it works by accident. You can do it this way:

var current_ms = new Date().getTime();
var in20min = new Date(current_ms + (1000*60*20))

Answer 4

JavaScript Date object has a method called setMinutes

let d = new Date()

d.setMinutes(d.getMinutes() + 20)

Answer 5

In javascript when working with dates I like to use moment:

https://momentjs.com/

So you can do this:

moment().add(20, 'minutes');

Answer 6

Use this code:

var date = new Date();
var min = parseInt(date.getMinutes()+20);
date.setMinutes(min);