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Lodash _.constant() Method

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  • Last Updated : 20 Apr, 2022

Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc. The _.constant method is used to create a function that returns value.

Syntax:

_.constant(value)

Parameters: This method accepts one parameter as mentioned above and described below:

  • value: The value to return from the new function.

Return Value: [Function] It returns the new constant function.

Example 1:

javascript




// Requiring the lodash library 
const _ = require("lodash");   
  
// Using _.constant() method
let gfg = _.times(3, _.constant({ 'geeks': 3 }));
  
// Printing the output 
console.log(gfg);

Note: Here, const _ = require(‘lodash’) is used to import the lodash library in the file.

Output:

[Object {geeks: 3}, Object {geeks: 3}, Object {geeks: 3}]

Example 2:

javascript




// Requiring the lodash library 
const _ = require("lodash");   
 
// Using _.constant() method
let obj = _.times(2,  _.constant({ 'a': 5 }));
 
// Checking if both objects are same
let gfg = console.log(obj[0] === obj[1] )
 
// Printing the output 
console.log(gfg);

Note: Here, const _ = require(‘lodash’) is used to import the lodash library in the file.

Output:

true
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