javascript instance method
DataView.prototype.setInt8()
The setInt8() method of DataView instances takes a number and stores it as an 8-bit signed 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.setInt8(1, 127); // Max signed 8-bit integer
console.log(view.getInt8(1));
// Expected output: 127
Syntax
setInt8(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 setInt8()
const buffer = new ArrayBuffer(10);
const dataview = new DataView(buffer);
dataview.setInt8(0, 3);
dataview.getInt8(0); // 3
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.