javascript instance method
DataView.prototype.setUint8()
The setUint8() method of DataView instances takes a number and stores it as an 8-bit unsigned integer in the byte at the specified byte offset of this DataView.
Interactive exampleOpen the canonical MDN source to run this embedded demo.
// 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
setUint8(byteOffset, value)
Parameters
byteOffset- : The offset, in bytes, from the start of the view to store the data in.
value- : The value to set. For how the value is encoded in bytes, see Value encoding and normalization.
Return value
Exceptions
RangeError- : Thrown if the
byteOffsetis set such that it would store beyond the end of the view.
- : Thrown if the
Examples
Using setUint8()
const buffer = new ArrayBuffer(10);
const dataview = new DataView(buffer);
dataview.setUint8(0, 3);
dataview.getUint8(0); // 3
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.