Underscore.JS - has method

Syntax

_.has(object, key)

has method checks if key is present in object. See the below example −

Example

var _ = require('underscore');

var student = {name: 'Sam', age: 10 }

// Example 1: Check existing key
console.log(_.has(student, 'name'));

// Example 2: Check non-existing key
console.log(_.has(student, 'marks'));

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

Command

\>node tester.js

Output

true
false