# First Application with Node.js
\
### Creating a Node.js Application
#### Step 1: Import the required modules
* Use the `require` command to load modules needed for the application
```javascript
var http = require("http");
```
* Loads the HTTP module and stores the returned HTTP instance in the http variable
\
#### Step 2: Create the Server
* Execute the `http.createServer()` method using the http instance created in Step 1
* Use the `listen()` method to bind with **port 8081**
* Pass a function with request and response as parameters to http.createServer()
> main.js
```javascript
var http = require("http");
http.createServer(function (request, response) {
/*
Send HTTP Header
HTTP Status: 200 : OK
Content Type: text/plain
*/
response.writeHead(200, {'Content-Type': 'text/plain'});
/*
Set Response Body to "Hello World"
*/
response.end("Hello World\n");
}).listen(8081);
console.log("Server running at http://127.0.0.1:8081");
```
* Creates a web server on port 8081 that always returns "Hello World"
\
#### Step 3: Test the Server
> Run the server
```bash
node main.js
```
> If the server starts successfully, the following text is output
```bash
Server running at http://127.0.0.1:8081/
```
> Open in a browser to see the following result
