Underscore.js _.isEven() Method

The _.isEven() method checks whether the given value is Even or not, and returns the corresponding boolean value.

Syntax:

_.isEven( value );

Parameters:

• value: Given value to be checked for even value.

Return Value: This method returns a Boolean value(Returns true if the given value is even, else false).

Note: This will not work in normal JavaScript because it requires the underscore.js contrib library to be installed. Underscore.js contrib library can be installed using npm install underscore-contrib .

Example 1:

Javascript

// Defining underscore contrib variable
var _ = require('underscore-contrib');

// Checking
console.log("The Value is Even : " + _.isEven(44));

Output:

The Value is Even : true

Example 2:

Javascript

// Defining underscore contrib variable
var _ = require('underscore-contrib');

// Checking
console.log("The Value is Even : " + _.isEven(21));

Output:

The Value is Even : false

Example 3: For value: 0, this method returns true.

Javascript

// Defining underscore contrib variable
var _ = require('underscore-contrib');

// Checking
console.log("The Value is Even : " + _.isEven(0));

Output:

The Value is Even : true

Example 4: For non-integer values, this method returns false.

Javascript

// Defining underscore contrib variable
var _ = require('underscore-contrib');

// Checking
console.log("The Value is Even : "
    + _.isEven("GeeksforGeeks"));

Output:

The Value is Even : false