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The Built-in URL Module The URL module splits up a web address into readable parts. To include the URL module, use the require() method: var url = require('url'); Parse an address with the url.parse() method, and it will return a URL object with each part of the address as properties: Example Split a web address into readable parts: var url = require('url'); var adr = 'http://localhost:8080/default.htm?year=2017&month=february'; var q = url.parse(adr, true); console.log(q.host); //returns 'localhost:8080' console.log(q.pathname); //returns '/default.htm' console.log(q.search); //returns '?year=2017&month=february' var qdata = q.query; //returns an object: { year: 2017, month: 'february' } console.log(qdata.month); //returns 'february' Run example » Node.js…

The Nodemailer Module The Nodemailer module makes it easy to send emails from your computer. The Nodemailer module can be downloaded and installed using npm: C:UsersYour Name>npm install nodemailer After you have downloaded the Nodemailer module, you can include the module in any application: var nodemailer = require('nodemailer'); Send an Email Now you are ready to send emails from your server. Use the username and password from your selected email provider to send an email. This tutorial will show you how to use your Gmail account to send an email: Example var nodemailer = require('nodemailer'); var transporter = nodemailer.createTransport({ service:…

  Node.js can be used in database applications. One of the most popular databases is MySQL. MySQL Database To be able to experiment with the code examples, you should have MySQL installed on your computer. You can download a free MySQL database at https://www.mysql.com/downloads/. Install MySQL Driver Once you have MySQL up and running on your computer, you can access it by using Node.js. To access a MySQL database with Node.js, you need a MySQL driver. This tutorial will use the "mysql" module, downloaded from NPM. To download and install the "mysql" module, open the Command Terminal and execute the…

Creating a Database To create a database in MySQL, use the "CREATE DATABASE" statement: Example Create a database named "mydb": var mysql = require('mysql');var con = mysql.createConnection({ host: "localhost", user: "yourusername", password: "yourpassword" }); con.connect(function(err) { if (err) throw err; console.log("Connected!"); con.query("CREATE DATABASE mydb", function (err, result) { if (err) throw err; console.log("Database created"); }); }); Run example » Save the code above in a file called "demo_create_db.js" and run the file: Run "demo_create_db.js" C:UsersYour Name>node demo_create_db.js Which will give you this result: Connected! Database created THU HUYỀN - LINKPIZ.COM

What is Node.js? Node.js is an open source server environment Node.js is free Node.js runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.) Node.js uses JavaScript on the server Why Node.js? Node.js uses asynchronous programming! A common task for a web server can be to open a file on the server and return the content to the client. Here is how PHP or ASP handles a file request: Sends the task to the computer's file system. Waits while the file system opens and reads the file. Returns the content to the client. Ready to handle the next request.…

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: myfirst.js var http = require('http');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.…