Underscore.JS - isBoolean method

Syntax

_.isBoolean(object)

isBoolean method checks if object is a boolean(true/false) or not. See the below example −

Example

var _ = require('underscore');

//Example 1: Check if argument passed is a boolean number
console.log(_.isBoolean(true));

//Example 2: Check if argument passed is a boolean number
console.log(_.isBoolean(0));

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

true
false