Create a nodejs server easily (1): A simple nodejs server example_node.js

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

It seems that the first section of every language tutorial talks about this, and we are no exception.

First we create a project directory. The directory can be defined by yourself. The directory in this case is e:/nodetest/.

Since we are building a server, I named the first file server.js.

Enter the following code in server.js:

Copy code The code is as follows:

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.

Use cd e:/nodetest/ to navigate to the project directory, and then execute the node server.js command to run the file;

Then open the browser and visit http://localhost:8888/, you will see a webpage that says "Hello World";

In fact, this is a simple working server, but it is too simple to do anything. But it doesn’t matter, follow me step by step, and I will teach you how to build a complete and usable server.

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