Lodash _.noop() Method

Lodash _.noop() method is used to return “undefined” irrespective of the arguments passed to it.

Syntax: 

_.noop();

Parameters:

This method can take optional parameters of any type.

Return value:

This method returns undefined.

Example 1: In this example, we are storing the undefined value in a variable by the use of the _.noop() method and comparing it to another variable having an undefined value and checking whether both are equal or not.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.noop() method 
let val1 = undefined;
let val2 = _.noop();

if (val1 == val2)
    console.log("val1 and val2 are equal");
else
    console.log(`val1 and val2 are not equal`); 

Output:

val1 and val2 are equal

Example 2: In this example, we are creating an array and an object by the use of the _.noop() method and printing their values in the console.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.noop() method 
let obj = new Object(_.noop())
console.log(`Object is ${obj.Object}`)

// Use of _.noop() method  
let arr = new Array(_.noop())
console.log(`Array is ${arr[0]}`) 

Output:

Object is undefined
Array is undefined