This chapter Node.js installation demonstrate the procedure for installing Node on Windows. Node.js have numerous ways to install on Windows and Linux. Node.js is nothing but a node.exe file and is easy to install with the help of latest installer available on official website nodejs.org. Following are the concepts covered.

• Node.js Installation on Windows
• Text Editors

Single Threaded Event Loop architecture is used by Node.js Platform in order to handle huge number of simultaneous client connections proficiently. Follow the steps below for Node.js Installation on Windows.

Download the Node.js latest version from the nodejs.org official website, choose the versions supported by PC either by selecting directly in home page or by clicking the Downloads Option as shown in the image below.

Now, run the downloaded file a window called Node.js Setup appears, Click the Next button as indicated in the image below.

Now, the window get redirected to the next setup level and ask the End-User License Agreement, click the check box and proceed by clicking the Next button as shown in the image below.

The setup wizard now ask the user to set the destination folder, user may either change the destination folder or can proceed by clicking the next button as shown in the image below.

The window get redirected to another setup level called Custom Setup were user can choose the features to be installed. Select a feature by clicking the icons in the tree or click the Next button with default setup as shown in the image below.

Now, Node.js is ready to install, click on the button Install to start the installation process as shown in the image below.

The setup wizard display a window with a message called Node.js has been successfully installed provided with a Finish button click on the button to finish the installation as shown in the image below.

Check whether Node.js installed properly, in order to check open CMD (Command Prompt) and type node by which node get accessed as shown in the image below. Now test whether everything working properly by typing the following command. [c]Console.log(‘Hello, World!’);[/c] If everything setup perfectly the same message get displayed in the terminal as shown in the image below, if not displayed check the setting properly.

Text editors are important to work with Node.js they are used to type the programs, the files created by using these text editors are known as source files because they contain the source code and are named with the .js extension. There are many text editors to work like Notepad, Notepad++, Intellij IDEA, Sublime text, WebStrom.

The example demonstrates a simple node server that outputs a message or greeting using a text editor. [c] var http = require('http'); var server = http.createServer(function (request, response) { response.writeHead(200, {"Content-Type": "text/plain"}); response.end("SPLessons stands for simple programing languages \n"); }); // IP defaults to 127.0.0.1, listen on port 8080 server.listen(8080); //give a message on terminal console.log("Server running at http://127.0.0.1:8080/"); [/c]

By running the code using the text editor user will get the following output as shown below.

• There are several ways to get “Node.js”. There are installers and binaries available for downloading at Nodejs.org.
• The node.js interpreter interprets and executes the javaScript code Written in source file.
• Huge number of text editors are available in the market for programming.