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This post shows how to valid date using moment.js library with an example.

Check out complete moment.js library at Moment JS Tutorial.

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

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 the date validation example.

Moment.js - Date validation example

We can use the isValid() method to check if the date and time object is valid.

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

const moment = require('moment');

let day1 = moment('2019-07-23');
let day2 = moment('2019-07-34');

if (day1.isValid()) {

    console.log("day1 is valid");
} else {
    
    console.log("day1 is not valid");
}

if (day2.isValid()) {

    console.log("day2 is valid");
} else {
    
    console.log("day2 is not valid");
}

Run above JavaScript code with the following command:

C:\javascript\momentjs-demo>node validaty.js
day1 is valid
day2 is not valid

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Moment JS Date Validation Example

Moment.js

Setting up Moment.js

1. Include moment.js in Script tag

2. Using Node.js

Moment.js - Date validation example

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Moment JS Date Validation Example

Moment.js

Setting up Moment.js

1. Include moment.js in Script tag

2. Using Node.js

Moment.js - Date validation example

My Top and Bestseller Udemy Courses. The sale is going on with a 70 - 80% discount. The discount coupon has been added to each course below:

Build REST APIs with Spring Boot 4, Spring Security 7, and JWT

[NEW] Learn Apache Maven with IntelliJ IDEA and Java 25

ChatGPT + Generative AI + Prompt Engineering for Beginners

Spring 7 and Spring Boot 4 for Beginners (Includes 8 Projects)

Building Real-Time REST APIs with Spring Boot - Blog App

Building Microservices with Spring Boot and Spring Cloud

Java Full-Stack Developer Course with Spring Boot and React JS

Build 5 Spring Boot Projects with Java: Line-by-Line Coding

Testing Spring Boot Application with JUnit and Mockito

Spring Boot Thymeleaf Real-Time Web Application - Blog App

Master Spring Data JPA with Hibernate

Spring Boot + Apache Kafka Course - The Practical Guide

Java Testing: Mastering JUnit 5 Framework

Reactive Programming in Java: Spring WebFlux and Testing

Spring Boot + RabbitMQ Course - The Practical Guide

Functional Programming in Java (Includes Java Collections)

ChatGPT for Java Developers: Boost Your Productivity with AI

Comments

Post a Comment

Spring Boot 3 Paid Course Published for Free on my Java Guides YouTube Channel

Spring Boot 3 Paid Course Published for Free
on my Java Guides YouTube Channel