Easily create nodejs server (1) : an example of a simple nodejs server

Let's first implement a simple example, hello world.

This seems to be the case in section 1 of every language tutorial, and we are no exception.

First, we will create a project directory, which can be defined by ourselves. In this case, the directory is e:/nodetest/.

Since we're building a server, I'll name the first file server.js.

Enter the following code in server.js:

var http = require("http"); 

 

http.createServer(function(request, response) { 

 

    response.writeHead(200, {"Content-Type": "text/plain"}); 

 

    response.write("Hello World"); 

 

    response.end(); 

 

}).listen(8888);

Then we open cmd.

Navigate to the project directory with cd e:/nodetest/ and execute node server.js to run the file.

Then open a browser and visit http://localhost:8888/. You will see a page that says "Hello World".

In fact, this is a simple working server, just too simple to do anything, but never mind, follow me step by step, I will teach you how to build a complete available server.

In the next section, we will analyze the composition of this code.