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Underscore.js _.repeat() Method
  • Last Updated : 29 Jul, 2020

The _.repeat() method takes an integer and a value and creates an array of that size containing the given the value given integer times.

Syntax:

_.repeat(n, value)

Parameters: 

  • n: The given integer for the times the value will be in the array.
  • value: The value to be in the array n times.

Return Value: This method returns a newly created array.

Note: This will not work in normal JavaScript because it requires the underscore.js contrib library to be installed.  Underscore.js contrib library can be installed using npm install underscore-contrib –save.



Example 1: In this example, we will generate a repeat array using this method.

Javascript

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// Defining underscore contrib variable
var _ = require('underscore-contrib'); 
  
// Integer
var integer = 10;
  
// Value
var value = "GeeksforGeeks";
  
// Generating Array using Repeat method
var arr =_.repeat(integer, value);
console.log("Integer : ", integer);
console.log("Value : ", value);
console.log("Generated Array : ", arr);

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Output:

Integer :  10
Value :  GeeksforGeeks
Generated Array :  [
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks',
  'GeeksforGeeks'
]

Example 2: Value can also be an integer.

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// Defining underscore contrib variable
var _ = require('underscore-contrib'); 
  
// Integer
var integer = 10;
  
// Value
var value = 1;
  
// Generating Array using Repeat method
var arr =_.repeat(integer, value);
console.log("Integer : ", integer);
console.log("Value : ", value);
console.log("Generated Array : ", arr);

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Output:

Integer :  10
Value :  1
Generated Array :  [
  1, 1, 1, 1, 1,
  1, 1, 1, 1, 1
]

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