Node.js – util.types.isDate() Method

The util.types.isDate() method checks whether the passed value is a built-in Date instance or not. If the above condition is satisfied, it returns True, else False.

Syntax

util.types.isDate(value)

Parameters

It takes a single parameter −

• value − This input value takes input for the required parameter and checks if it's a Date instance or not.

It returns True or False based upon the input value passed.

Example 1

Create a file with the name "isDate.js" and copy the following code snippet. After creating the file, use the command "node isDate.js" to run this code.

// util.types.isDate() Demo Example

// Importing the util module
const util = require('util');

let date = new Date();

// Passing Date instance
console.log("1." + util.types.isDate(date));

Output

C:\home\node>> node isDate.js
1.true

Example 2

Let’s have a look at one more example

// util.types.isDate() Demo Example

// Importing the util module
const util = require('util');
let customDate = new Date('December 17, 1995 03:24:00')
let customDate1 = new Date('1995-12-17T03:24:00')
let customDate2 = new Date(1995, 11, 17)
let customDate3 = new Date(1995, 11, 17, 3, 24, 0)

// Passing epoch time in millis
let customDate4 = new Date(628021800000)

// Passing different Date instances
console.log("1." + util.types.isDate(customDate));
console.log("2." + util.types.isDate(customDate1));
console.log("3." + util.types.isDate(customDate2));
console.log("4." + util.types.isDate(customDate3));
console.log("5." + util.types.isDate(customDate4));

Output

C:\home\node>> node isDate.js
1.true
2.true
3.true
4.true
5.true