The **`Buffer.write()` method** writes a specified string into the buffer at a specified position. To use the buffer module directly, you can install it using `npm`, as shown below:

```Js
npm install buffer
```

# Syntax 
The `Buffer.write()` method is declared as follows:

# Parameters
The method takes four parameters:

* **`value`**: This is the string that we wish to write into the buffer.

* **`start`**: This holds the number of bytes to skip before writing into the buffer.

* **`bytes`**: This is the number of bytes to write into the buffer. 

* **`encoding`**: This holds the value of the encoding. 



> The default value of `start` is zero.

> The default value of `bytes` is the difference of #key# `buffer.length`: returns the number of bytes in the buffer #key# and `start`.


>The default value of `encoding` is `utf-8`. 

# Return value 
The `Buffer.write()` method returns the number that holds the number of bytes written. 

# Example
The following code shows the use of the `Buffer.write()` method. 

First, a buffer is created with a string as the parameter. We then call the  `buf.write` method by providing the parameters. Finally, the result is displayed by converting the buffer to the string format. 

// Create a buffer
var buf = Buffer.from ("Hello, I am good!");

// Write to the buffer
buf.write("okay", 12, 4, 'utf-8'); 

// Display result 
console.log(buf.toString());

What is Buffer Module write() in Node.js?

Syntax

Parameters

Return value

Example