remb
[Runtime
](../../../index.md)[Package Manager
](../../../pm/cli/install/index.md)[Bundler
](../../../bundler/index.md)[Test Runner
](../../../test/index.md)[Guides
](../../index.md)[Reference
](https://bun.com/reference)[Blog
](https://bun.com/blog)[Feedback
](../../../feedback/index.md)
A Uint8Array is a typed array, meaning it is a mechanism for viewing the data in an underlying ArrayBuffer.
const buffer = new ArrayBuffer(64);
const arr = new Uint8Array(buffer);
Instances of other typed arrays can be created similarly.
const buffer = new ArrayBuffer(64);
const arr1 = new Uint8Array(buffer);
const arr2 = new Uint16Array(buffer);
const arr3 = new Uint32Array(buffer);
const arr4 = new Float32Array(buffer);
const arr5 = new Float64Array(buffer);
const arr6 = new BigInt64Array(buffer);
const arr7 = new BigUint64Array(buffer);
To create a typed array that only views a portion of the underlying buffer, pass the offset and length to the constructor.
const buffer = new ArrayBuffer(64);
const arr = new Uint8Array(buffer, 0, 16); // view first 16 bytes
See Docs > API > Utils for more useful utilities.
Was this page helpful?
[
Convert an ArrayBuffer to an array of numbers
Previous
](../arraybuffer-to-array/index.md)[
Convert a Buffer to a string
Next
](../buffer-to-string/index.md)