Underscore.JS - noop method

Syntax

_.noop()

noop method returns the undefined no matter what is passed as argument. It is useful for default optional callback parameters. See the below example −

Example

var _ = require('underscore');

//Example 1: Check if noop returns undefined
console.log(undefined === _.noop());

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

Command

\>node tester.js

Output

true