TypeScript Array.from() Method

TypeScript `Array.from()` method is a versatile method that transforms array-like or iterable objects into actual arrays. It allows to create arrays from objects with a length property or iterable structures, simplifying the conversion process.

This method is particularly useful for working with collections of data where array operations are needed, providing a convenient and concise way to achieve array representation in TypeScript.

Syntax:

Array.from(object, mapFunction, thisValue)

Parameters:

• object: This Parameter is wanted to specify the object to transform to an array.
• mapFunction: This Parameter specifies the map function to call on every item of the array.
• thisValue: This Parameter specifies the charge to apply as this on the equal time as executing the map function.

Return Value:

It returns an array object or instance of an array.

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

Javascript

// Creating array from input string
let myArr: string[] = 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.

Javascript

// Creating array form the given string
let myArr: string[] = Array
    .from("45878965412365");

// Display output
console.log(myArr);

Output:

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