Setting Up JavaScript MySQL Integration: 3 Easy Steps

on Data Integration, Database, JavaScript, MySQL, Node js, Relational Database, Tutorials • January 11th, 2022

JavaScript MySQL

Companies run their online businesses through websites and applications. These websites use Databases to store, retrieve and satisfy all the data requirements. Almost all modern websites are interactive and dynamic that respond according to the data and user inputs. JavaScript is a programming language that is widely used along with HTML and CSS to provide dynamic behavior to the website. It is used to manipulate the content of web pages using programming. 

MySQL is one of the most used Relational Databases used by companies to run their daily business operations and maintain data. Connecting your website to a MySQL Database solves the problem of data available because of its robustness and reliability. JavaScript MySQL Integration allows developers to connect MySQL Database to websites and develop fully-fledged websites according to their business requirements. 

JavaScript MySQL Integration will make the websites and applications user interactive, allow companies user data through JavaScript MySQL connection, and manipulate data. In this article, you will have a brief introduction to MySQL Database, JavaScript, and the steps to set up JavaScript MySQL Integration.

Table of Contents 

Prerequisites 

  • MySQL installed on your local system.
  • Basic knowledge of SQL language.
  • Node.js installed on your local system.

Introduction to MySQL

MySQL Logo
Image Source

MySQL is an open-source Relational Database Management System (RDBMS) that organizes data into one or more tables that are related to each other via some logical relation. It serves small to large size businesses for running various business operations and fulfilling all the data needs. It uses SQL (Structured Query Language) to create, modify, and extract data from the Relational Database. MySQL supports many operating systems and platforms such as Linux, Mac OS X, Windows, Free BSD, Solaris, and others. 

MySQL is a widely used Database by companies to satisfy their business needs and maintain fast, reliable, and protective data transactions. It is now backed by Oracle and comes with many versions that are used by many top websites, servers, etc. MySQL is easy to learn and allows developers to manipulate data to build applications and connect Relational Database for data accessibility. 

Key Features of MySQL

MySQL allows companies to manage their business operations and store data in a safe place. A few features of MySQL are listed below:

  • Robust Transactional Support: MySQL offers one of the best transaction support engines in the Relational Database available in the market. It supports ACID (atomic, consistent, isolated, durable) transaction, unlimited row-level locking, etc.
  • Data Protection: MySQL comes with exceptional security features and allows only authorized users to access data. Protecting company’s and users’ data is one of the most important jobs.
  • Scalability: MySQL Database is capable of sporting the capacity to handle embedded applications and Data Warehouses that runs terabytes of data. 
  • High Performance: MySQL is easy to configure and allow users to specifically configure Database for applications that increase performance.
  • GUI Support: MySQL offers its GUI-based tool MySQL Workbench that allows Database Architects, Developers, Database Administrators to manage MySQL Database easily.

To know more about MySQL, click here.

Introduction to JavaScript 

JavaScript Logo
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JavaScript is a lightweight programming language that allows users to implement complex features and functionalities on web pages. It adds behavior to the webpage, and around 97% of the websites on the internet use javascript. Websites use JavaScript on the client-side and often use various 3rd party libraries. All the major web browsers come with a JavaScript engine for executing JavaScript code on clients’ devices. JavaScript converts the static web page into an interactive web page.

JavaScript is designed to create network-centric applications. You can easily code in JavaScript on any code editor or file editor, saving the file with Extension .js and running on any major web browser without installing any package or library externally. 

Key Features of JavaScript 

A few features of JavaScript are listed below:

  • Platform Independent: Web browsers interpret JavaScript language so it solves the problem for any platform dependency, compatibility, etc. JavaScript provides various browsers with additional functionalities that help reduce server load and network traffic.
  • Dynamic Typing: JavaScript supports dynamic typing that means the types of variables are defined by the value it stores.
  • Async Processing: JavaScript supports Async programming that means it enables the asynchronous process and doesn’t need to wait for the response, which at times blocks the request processing.
  • Functional Style: JavaScript uses a functional approach and objects are created using the constructor function where each constructor function represents a unique object type. 

To know more about JavaScript, click here.

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Steps to Set Up JavaScript MySQL Integration 

JavaScript MySQL Integration Using Node.js
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Now that you have a brief understanding of MySQL Database and JavaScript. In this section, you will learn about connecting JavaScript MySQL so that you can use it to create websites and load/ unload data to the MySQL Database. JavaScript is a client-side language that runs in the browser and MySQL is a server-side technology that runs on the server. You need to use the server-side language Node.js to connect to the MySQL Database. 

Node.js is an open-source server-side JavaScript runtime environment and provides cross-platform application development. In the modern web technology stack, Node.js is widely used as the alternative to JavScript because it offers all the JavaScript features as it is written in JavaScript and C++. So when it comes to building websites and connecting them to server-side applications and services, Node.js is the easy and reliable option and also to connect JavaScript MySQL Database.

In this tutorial, Node.js (JavaScript runtime environment) will be used to connect to MySQL Database. The following steps for JavaScript MySQL Integration are listed below:

Step 1: Installing MySQL Module

  • First, open your terminal or command prompt.
  • create a new directory with a name of your choice and move to that directory by following the commands given below.
mkdir js-mysql
cd js-mysql
  • Now, create a “package.json” file with the following command given below.
npm init -y
  • Once it gets started. you can now install the “mysql” library with the following command given below.
npm install mysql

Step 2: Creating a Sample MySQL Database

  • For this JavaScript MySQL Integration, a sample Database with dummy information will be created. You can use your own MySQL Database or create a new one with the following command given below.
CREATE DATABASE jsMysql CHARACTER SET utf8 COLLATE utf8_general_ci;
USE jsMysql;

CREATE TABLE workers(
  id int(11) NOT NULL AUTO_INCREMENT,
  name varchar(50),
  city varchar(50),
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=5 ;

INSERT INTO authors (id, name, city) VALUES
(1, 'Pam Shel', 'New York'),
(2, 'Maurene Oswald', 'Dubai'),
(3, 'Cori Vergil', 'Berlin'),
(4, 'Misty Thomas', 'Moscow');

Step 3: Connecting to the Database

  • Create a new file named “app.js” in the current directory.
  • Now, open the file and enter the following code given below to connect JavaScript MySQL Database.
const mysql = require('mysql');
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'user',
  password: '1234567890',
});

connection.connect((error) => {
  if(error){
    console.log('Error connecting to the MySQL Database');
    return;
  }
  console.log('Connection established sucessfully');
});
connection.end((error) => {
});
  • After, save the file and type the command in the terminal as given below.
node app.js
  • This will start the Node.js server and start initiating JavaScript MySQL Database connection.
  • Once the connection is established, the JavaScript MySQL Integration is successful and it will show the message “Connection established successfully”.

That’s it! You have completed JavaScript MySQL Integration. Now, you can use this MySQL Database to develop websites with JavaScript.

Conclusion

In this article, you learnt about MySQL Database, JavaScript, Node.js, and the steps to set up JavaScript MySQL Integration. You also read about the need to connect a Database to a website using JavaScript MySQL and how it helps companies run business operations and satisfy their data needs. Using Node.js for JavaScript MySQL Database is one of the easiest and straightforward ways to connect a website or application to a MySQL Database.

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