JavaScript Array from() Method

12 August 2024

0

The JavaScript Array from() method returns an Array object from any object with a length property or an iterable object.

Array.from(object, mapFunction, thisValue)

object: This Parameter is required to specify the object to convert to an array.
mapFunction: This Parameter specifies the map function to call on each item of the array.
- element: It specifies the current element.
- currentIndex: This Parameter specifies the array index of the current element.
thisValue: This Parameter specifies the value to use as this when executing the mapFunction.

It returns an array object or instance of an arrray.

Example 1: In this example, we will be using Array from() method to create an array from the string value.

Javascript

// Creating array from input string
let myArr = Array.from(
    "GeeksForGeeks");
 
// Display output
console.log(myArr);

Output

[
  'G', 'e', 'e', 'k',
  's', 'F', 'o', 'r',
  'G', 'e', 'e', 'k',
  's'
]

Example 2: In this example, we will be using Array from() method to create an array from the string value.

// Creating array form the given string
let myArr = Array.from("45878965412365");
 
// Display output
console.log(myArr);

Output

[
  '4', '5', '8', '7',
  '8', '9', '6', '5',
  '4', '1', '2', '3',
  '6', '5'
]

We have a complete list of Javascript Array methods, to check those please go through this Javascript Array Complete reference article.

Supported Browsers:

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.