DataView.prototype.getInt32()

BaselineWidely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

ThegetInt32() method ofDataView instances reads 4 bytes starting at the specified byte offset of thisDataView 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 bytesconst buffer = new ArrayBuffer(16);const view = new DataView(buffer);view.setInt32(1, 2147483647); // Max signed 32-bit integerconsole.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 inlittle- or big-endian format. Iffalse orundefined, a big-endian value is read.

Return value

An integer from -2147483648 to 2147483647, inclusive.

Exceptions

RangeError: Thrown if thebyteOffset is 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