Moment.js isDate() Function

Given a value to the variable and the task is to check whether a variable is an actual date or not in Moment.js using the isDate() method. To check if a variable is a native js Date object, use moment.isDate() method. 

Syntax:

moment.isDate(obj);

Parameter: Object 

Returns: True or False 

Installation of moment module:

You can visit the link to the Install moment module. You can install this package by using this command.

npm install moment

After installing the moment module, you can check your moment version in the command prompt using the command.

npm version moment

After that, you can just create a folder and add a file, for example, index.js. To run this file you need to run the following command.

node index.js

Project Structure:

Example 1: Filename: index.js

javascript

// Requiring module
const moment = require('moment');

let bool1 = moment.isDate(); // false
console.log(bool1);

let bool2 = moment.isDate(new Date()); // true
console.log(bool2);

let bool3 = moment.isDate(moment()); // false
console.log(bool3);

Steps to run the program:

Make sure you have installed the moment module using the following command:

npm install moment

Run the index.js file using the below command:

node index.js

Output:

false
true
false

Example 2: Filename: index.js

javascript

// Requiring module
const moment = require('moment');

function checkIsDate(obj) {
   return moment.isDate(obj);
}

let bool = checkIsDate(new Date());
console.log(bool);

Steps to run the program:

Run the index.js file using the below command:

node index.js

Output:

true

Reference: https://momentjs.com/docs/#/query/is-a-date/