#    
##    
A **`Buffer`** is a temporary memory that holds data until it is consumed. A `Buffer` represents a #key# fixed-size chunk of memory: can't be resized #key# allocated outside of the V8 JavaScript engine.

You can think of a `Buffer` like an array of integers that each represent a byte of data.

The **`Buffer.isBuffer()` method** of the `Buffer` object is used to check if an object is a `Buffer` or not. 
>`isBuffer` is implemented by the Node.js `Buffer` class.

> `Buffer` and its methods do not need to be imported, as `Buffer` is a global class.
## Syntax
```
Buffer.isBuffer([object])
```

## Parameters
* `[object]`: A required parameter that is the object to check if it is a `Buffer` or not.

## Return value
`isBuffer()` returns a Boolean value that can be `true` or `false`. The method returns `true` if `[object]` is a `Buffer`; otherwise, it returns `false`.

## Example
In the example below, we test different objects to see if they are `Buffers`.


// create a real Buffer object
const buf = Buffer.from("A buffer")

// creating other objcts
const name = "Theodore"
const ourObj = {}
const ourArr = []

// Checking to see if they are buffers
console.log(Buffer.isBuffer(name))      // false
console.log(Buffer.isBuffer(ourObj))    // false
console.log(Buffer.isBuffer(ourArr))    // false 
console.log(Buffer.isBuffer(buf))       // true

In the code above, `ourObj` is not a `Buffer` because it is just a plain Javascript object. The array `ourArr` is also just a Javascript array object. Likewise, the string `name` is just a string and not a `Buffer` instance.

As we have seen, the `isBuffer()` method is used to check if an object is actually a `Buffer`.

What is the Node.js Buffer.isBuffer() method?

Buffer.isBuffer() checks if an object is a Buffer, returning true if it is and false if not.