How To Run Node Js
May 2, 2019 - We've all been there — you open up an app for local development and you need to run your Express/Node.js backend server and your React. How Does JavaScript Run On A Server? Node.js works on a v8 environment – it is a virtual machine or a JavaScript engine that runs the JavaScript code, so for hosting you can’t use the ordinary web hosts. You will need the ones that have the v8 environment. Here are some provider suggestions for Node.js hosting: Cloud Foundry; Cloudnode; DotCloud; Duostack. To make use of these tools (or packages) in Node.js we need to be able to install and manage them in a useful way. This is where npm, the Node package manager, comes in. It installs the packages you want to use and provides a useful interface to work with them.
Download Node.js
The official Node.js website has installation instructions for Node.js: https://nodejs.org
Getting Started
Once you have downloaded and installed Node.js on your computer, let's try to display 'Hello World' in a web browser.
Create a Node.js file named 'myfirst.js', and add the following code: Pokemon leaf green game download.
myfirst.js
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/html'});
res.end('Hello World!');
}).listen(8080);
Save the file on your computer: C:UsersYour Namemyfirst.js
The code tells the computer to write 'Hello World!' if anyone (e.g. a web browser) tries to access your computer on port 8080.
For now, you do not have to understand the code. It will be explained later.
Command Line Interface
Node.js files must be initiated in the 'Command Line Interface' program of your computer.
How to open the command line interface on your computer depends on the operating system. For Windows users, press the start button and look for 'Command Prompt', or simply write 'cmd' in the search field.
Navigate to the folder that contains the file 'myfirst.js', the command line interface window should look something like this:
Initiate the Node.js File
The file you have just created must be initiated by Node.js before any action can take place.
Start your command line interface, write node myfirst.js and hit enter:
How To Run Node Js In Terminal
Initiate 'myfirst.js':
Now, your computer works as a server!
If anyone tries to access your computer on port 8080, they will get a 'Hello World!' message in return!
Start your internet browser, and type in the address: http://localhost:8080