Node.js is a popular runtime environment for executing JavaScript code outside of a web browser. In this guide, we’ll walk through the steps to install Node.js on Ubuntu 20.04, configure it, and run a sample app.<\/p>\n
Before proceeding, ensure you have:<\/p>\n
sudo apt update<\/code><\/pre>\n\n\n- Install Node.js:<\/strong> Use the following command to install Node.js from the default Ubuntu repositories:<\/li>\n<\/ol>\n<\/ol>\n
sudo apt install nodejs<\/code><\/pre>\n\n\n- Install npm:<\/strong> npm is a package manager for Node.js. Install it using the following command:<\/li>\n<\/ol>\n<\/ol>\n
sudo apt install npm<\/code><\/pre>\nRun a Sample Node.js App<\/h2>\n\n\n- Create a Directory:<\/strong> Create a directory for your Node.js app:<\/li>\n<\/ol>\n<\/ol>\n
mkdir myapp\r\ncd myapp<\/code><\/pre>\n\n\n- Create a JavaScript File:<\/strong> Create a JavaScript file for your Node.js app. For example, create a file named
app.js<\/code> and add the following code:<\/li>\n<\/ol>\n<\/ol>\nconst http = require('http');\r\n\r\nconst hostname = '127.0.0.1';\r\nconst port = 3000;\r\n\r\nconst server = http.createServer((req, res) => {\r\n res.statusCode = 200;\r\n res.setHeader('Content-Type', 'text\/plain');\r\n res.end('Hello, World!\\n');\r\n});\r\n\r\nserver.listen(port, hostname, () => {\r\n console.log(`Server running at http:\/\/${hostname}:${port}\/`);\r\n});<\/code><\/pre>\n\n\n- Run the App:<\/strong> Use the following command to run the Node.js app:<\/li>\n<\/ol>\n<\/ol>\n
node app.js<\/code><\/pre>\nYour Node.js app should now be running and accessible at http:\/\/127.0.0.1:3000\/<\/p>\n
Conclusion<\/h2>\n
Congratulations! You have successfully installed Node.js and npm on your Ubuntu 20.04 server, configured them, and run a sample Node.js app. You can now start developing and running JavaScript applications using Node.js.<\/p>\n
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