The **DataView** view in JavaScript provides an interface to read and write multiple number types into an #key# ArrayBuffer: The ArrayBuffer object is used to represent a generic, fixed-length, raw binary data buffer. #key#. 

JavaScript's **`dataView.getInt32()`** is a built-in method in `dataView.` `dataView.getInt32()` gets a signed 32-bit integer from the start of the `dataView` number at a specified offset. 

# Syntax
`dataView.getInt32()` is declared as shown below:


# Parameters
`dataview.getInt32()` takes the following two parameters:

* `byteOffset` - compulsory parameter that represents the offset, in bytes, from the start of the view from where to read the data.

* `littleEndian` - optional parameter that indicates if the 32-bit integer should be stored in little or big-endian notation. If `littleEndian` is `True`, the value is read in little-endian format. If it is `False` or not specified, the value is read in big-endian format. 

# Return value
The `dataView.getInt32()` method returns a 32-bit signed integer value. 

> If `byteOffset` is set such that it would read beyond the end of the view, then a `RangeError` occurs. 

# Examples
The example below shows the use of the `dataView.getInt32()` method in JavaScript when the second parameter is not specified:

//Create ArrayBuffer
var buf = new ArrayBuffer(16);
//Declare DataView
const dataview = new DataView(buf);
dataview.setInt32(1,1234556789);
//Call getInt32 method 
console.log(dataview.getInt32(1));

The example below shows the use of the `dataView.getInt32()` method in JavaScript when the second parameter is specified:

//Create ArrayBuffer
var buf = new ArrayBuffer(16);
//Declare DataView
const dataview = new DataView(buf);
dataview.setInt32(1,1234556789);
//Call getInt32 method 
console.log(dataview.getInt32(1, littleEndian = true));

What is the dataView.getInt32() method in JavaScript?

dataView.getInt32() extracts a signed 32-bit integer from an ArrayBuffer at a given byte offset, optionally using little-endian format.