DataView.prototype.getInt32()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The getInt32() method of DataView instances reads 4 bytes starting at the specified byte offset of this DataView and interprets them as a 32-bit signed integer. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.
Try it
// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);
const view = new DataView(buffer);
view.setInt32(1, 2147483647); // Max signed 32-bit integer
console.log(view.getInt32(1));
// Expected output: 2147483647
Syntax
getInt32(byteOffset)
getInt32(byteOffset, littleEndian)
Parameters
byteOffset-
The offset, in bytes, from the start of the view to read the data from.
littleEndianOptional-
Indicates whether the data is stored in little- or big-endian format. If
falseorundefined, a big-endian value is read.
Return value
An integer from -2147483648 to 2147483647, inclusive.
Exceptions
RangeError-
Thrown if the
byteOffsetis set such that it would read beyond the end of the view.
Examples
Using getInt32()
const { buffer } = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const dataview = new DataView(buffer);
console.log(dataview.getInt32(1)); // 16909060
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-dataview.prototype.getint32 |
Browser compatibility
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