Node.js util.types.isDate() Method

Last Updated : 28 Apr, 2025

The util.types.isDate() method is an inbuilt application programming interface of the util module which is used to check the type for Date in the node.js. 

Syntax:

util.types.isDate( value )

Parameters: This method accepts a single parameter as mentioned above and described below.

  • value: It is a required parameter of any datatype.

Return Value: This returns a boolean value, TRUE if the value is a Date object, FALSE otherwise. 

Example 1: The below example illustrates the use of util.types.isDate() method in Node.js: 

javascript 
// Node.js program to demonstrate the   
// util.types.isDate() Method

// Allocating util module
const util = require('util');

// Value to be passed as parameter
// of util.types.isDate() method
let v1 = new Date();
let v2 = 3 / 6 / 96;

// Printing the returned value from
// util.types.isDate() method
console.log(util.types.isDate(v1));
console.log(util.types.isDate(v2));

Output:

true
false

Example 2: In this example, we will illustrate the use of util.types.isDate() method in Node.js

javascript 
// Node.js program to demonstrate the
// util.types.isDate() Method

// Allocating util module
const util = require('util');

// Value to be passed as parameter
// of util.types.isDate() method
let v1 = new Date();
let v2 = 3 / 6 / 96;

// Calling util.types.isDate() method
if (util.types.isDate(v1))
    console.log("The passed value is a Date.");
else
    console.log("The passed value is not a Date");

if (util.types.isDate(v2))
    console.log("The passed value is a Date.");
else
    console.log("The passed value is not a Date");

Output:

The passed value is a Date.
The passed value is not a Date

Note: The above program will compile and run by using the node filename.js command. 

Reference: https://nodejs.org/api/util.html#util_util_types_isdate_value

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