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The moment js tutorial shows how to work with date and time in JavaScript with moment.js module.

Moment.js

The moment.js is a lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates.

Read more at the official documentation https://momentjs.com/

Setting up Moment.js

Different ways we can set up the moment.js for your project.

1. Include moment.js in Script tag

We can directly include moment.js inside the script tag and start working with MomentJS.

<script src="https://MomentJS.com/downloads/moment.js"></script>

For example:

<!DOCTYPE html>
<html>
<head>
    <title>Moment JS Tutorial</title>
    <script src="https://MomentJS.com/downloads/moment.js"></script>
    
</head>
<body>
 <div style = "font-size:25px" id = "todaysdate"></div>
</body>

 <script type="text/javascript">
  let now = moment();
  let time = now.format();
  console.log(now.format());
  document.getElementById("todaysdate").innerHTML = time;
    </script>
</html>

2. Using Node.js

If you are opting for this method, make sure you have Node.js and npm installed on your system. You can use the following command to install MomentJS −

npm install moment

Create a JavaScript file named "test.js" and add the following code to it:

var moment = require('moment');
var a = moment().toString();
console.log(a);

Now, in the command prompt, run the command node test.js as shown in the below output −

C:\javascript\momentjs-demo>node test.js
Wed Jul 24 2019 17:12:22 GMT+0530

We are using node js to demonstrates these tutorial examples.

Get today's date using moment.js

The example prints today's date and time.

const moment = require('moment');
let now = moment();
console.log(now.format());

Let's understand the above example.

We load the Moment.js library:

const moment = require('moment');

We get the current local DateTime object with moment():

let now = moment();

We format the output with format(). By default, we get a long date-time format:

console.log(now.format());

Different ways to create date and time Moment.js objects

We can use several ways to create date and time Moment.js objects. These objects have to be formatted later to human-readable format.

Example: create a JavaScript file named "create-objects.js" file and add the following code to it:

const moment = require('moment');

let d1 = moment("2019-07-24");
console.log(d1.format('ll'));

let d2 = moment([2019, 06, 24]);
console.log(d2.format('ll'));

let d3 = moment({ year :2019, month :06, day :24, 
hour :15, minute :10, second :3, millisecond :123});
console.log(d3.format('ll'));

let d4 = moment(1563967658917);
console.log(d4.format('ll'));

let d5 = moment(new Date(2019, 06, 24));
console.log(d5.format('ll'));