Last Updated : 09 Jan, 2024
The Uint8Array.from()
method in JavaScript is used to create a new Uint8Array
from an array-like or iterable object. It allows you to transform an existing array or iterable into a new Uint8Array
instance, where each element of the new array is represented as an 8-bit unsigned integer.
Uint8Array.from( source, mapFn, thisArg )Parameters:
This method accepts three parameters as mentioned above and described below:
This method returns a new Uint8Array instance.
Example 1: In this example, we will see the basic functionality of the Uint8Array array to create new Uint8array from a string of integers.
javascript
// Create a Uint8Array from a
// string like structure
let array = Uint8Array.from('45465768654323456');
// Display the result
console.log(array);
Uint8Array(17) [ 4, 5, 4, 6, 5, 7, 6, 8, 6, 5, 4, 3, 2, 3, 4, 5, 6 ]
Example 2: In this example, we will see the basic functionality of the Uint8Array array to create a new Unit8array performing the required transformations.
javascript
// Create a Uint8Array from a array by adding
// 3 to each number using function
let array = Uint8Array.from(
[1, 2, 3, 4, 5, 6],
(z) => z + 3
);
// Display the result
console.log(array);
Uint8Array(6) [ 4, 5, 6, 7, 8, 9 ]
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