DataView.prototype.getUint8()

The getUint8() method of {{jsxref("DataView")}} instances reads 1 byte at the specified byte offset of this DataView and interprets it as an 8-bit unsigned integer.

{{InteractiveExample("JavaScript Demo: DataView.prototype.getUint8()")}}

```js interactive-example // Create an ArrayBuffer with a size in bytes const buffer = new ArrayBuffer(16);

const view = new DataView(buffer); view.setUint8(1, 255); // Max unsigned 8-bit integer

console.log(view.getUint8(1)); // Expected output: 255

## Syntax

```js-nolint
getUint8(byteOffset)

Parameters#

• byteOffset
• : The offset, in bytes, from the start of the view to read the data from.

Return value#

An integer from 0 to 255, inclusive.

Exceptions#

• {{jsxref("RangeError")}}
• : Thrown if the byteOffset is set such that it would read beyond the end of the view.

Examples#

Using getUint8()#

const { buffer } = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const dataview = new DataView(buffer);
console.log(dataview.getUint8(1)); // 1

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• JavaScript typed arrays guide
• {{jsxref("DataView")}}
• {{jsxref("ArrayBuffer")}}
• {{jsxref("Uint8Array")}}