JavaScript Tutorial
- What is JavaScript?
- JavaScript Example
- External JavaScript
JavaScript Basics
- JS Comment
- JS Variable
- JS Global Variable
- JS Data Types
- JS Operators
- JS If Statement
- JS Switch
- JS Loop
- JS Function
JavaScript Objects
- JS Object
- JS Array
- JS String
- JS Date
- JS Math
- JS Number
- JS Boolean
JavaScript BOM
- Browser Objects
- 1) Window Object
- 2) History Object
- 3) Navigator Object
- 4) Screen Object
JavaScript DOM
- 5) Document Object
- getElementById
- GetElementsByClassName()
- getElementsByName
- getElementsByTagName
- JS innerHTML property
- JS innerText property
JavaScript Validation
- JS form validation
- JS email validation
JavaScript OOPs
- JS Class
- JS Object
- JS Prototype
- JS constructor Method
- JS static Method
- JS Encapsulation
- JS Inheritance
- JS Polymorphism
- JS Abstraction
JavaScript Cookies
- JavaScript Cookies
- JS Cookie Attributes
- Cookie with multiple Name
- Deleting Cookies
JavaScript Events
- JavaScript Events
- JavaScript addEventListener()
- JS onclick event
- JS dblclick event
- JS onload event
- JS onresize event
Exception Handling
- JS Exception Handling
- JavaScript try-catch
JavaScript Tutorial
Our JavaScript programming tutorial is suitable for students and professionals. JavaScript is a versatile, widely-used programming language for web development. It enables interactive and dynamic web content, allowing developers to create features like animations, forms, and responsive designs. It’s executed by web browsers, enhancing user experiences and enabling client-server communication.
What is JavaScript?
JavaScript allows developers to add functionality to web pages, manipulate HTML elements, handle events, validate forms, create animations, fetch data from servers, and much more. Its versatility and wide adoption make it a fundamental tool for web development.
History of JavaScript
JavaScript is a high-level, interpreted programming language that was created by Brendan Eich in 1995. It was originally developed under the name “Mocha” but was later renamed to “LiveScript” before finally being called JavaScript. It was initially designed to add interactivity to web pages in the Netscape Navigator browser.
JavaScript gained popularity due to its ability to run on both the client side (in the user’s browser) and the server side (on web servers). It provided a way to dynamically manipulate the content and behavior of web pages, making them more interactive and responsive.
Over the years, JavaScript has evolved significantly, becoming one of the most widely used programming languages. It received standardization through the ECMAScript specification, with ECMAScript 3 being released in 1999 and ECMAScript 5 in 2009. These versions introduced various features and improvements to the language.
In recent years, the release of ECMAScript 2015, also known as ES6, brought significant enhancements to JavaScript, including the introduction of arrow functions, classes, modules, and promises. Since then, new versions of ECMAScript have been released regularly, with the latest being ECMAScript 2022.
Today, JavaScript is not only used for web development, but also for server-side development (using environments like Node.js), mobile app development (with frameworks like React Native), and even desktop application development (using frameworks like Electron).
JavaScript has become an integral part of web development, enabling developers to create sophisticated and interactive web applications. Its versatility and widespread adoption make it a crucial programming language in the modern tech industry.
Features of JavaScript
Here are some of the key features of JavaScript:
- Lightweight: JavaScript is a very small language, with a relatively small syntax. This makes it easy to learn and use, even for beginners.
- Interpreted: JavaScript code is not compiled into machine code before it is executed. Instead, it is interpreted by the JavaScript engine in the web browser. This makes JavaScript very fast and efficient, as the engine can optimize the code as it is being executed.
- Object-oriented programming: JavaScript is an object-oriented programming language, which means that it supports the concepts of objects, classes, and inheritance. This makes it a powerful language for creating complex and reusable code.
- First-class functions: JavaScript functions are first-class citizens, which means that they can be treated like any other value. This allows for very powerful and flexible programming techniques, such as closures and callbacks.
- Platform independent: JavaScript is a platform-independent language, which means that it can be used on any platform that has a JavaScript engine. This makes it a very versatile language, as it can be used to create web applications, mobile applications, and even desktop applications.
Application of JavaScript
Some common applications of JavaScript include:
1. Web Development: JavaScript is widely used for front-end web development to create interactive web pages and dynamic user interfaces.
2. Web Applications: JavaScript can be used to build web applications, ranging from simple forms and calculators to complex single-page applications (SPAs) and progressive web apps (PWAs).
3. Mobile App Development: With frameworks like React Native and Ionic, JavaScript can be used to develop cross-platform mobile applications for iOS and Android.
4. Game Development: JavaScript, along with HTML5 canvas and libraries like Phaser and Pixi.js, can be used to create browser-based games.
5. Server-Side Development: Using technologies like Node.js, JavaScript can be used for server-side development to build scalable and high-performance web applications.
6. Desktop Applications: Frameworks such as Electron enable the development of desktop applications using JavaScript, HTML, and CSS.
7. Data Visualization: JavaScript libraries like D3.js and Chart.js facilitate the creation of interactive and visually appealing data visualizations on the web.
8. Browser Extensions: JavaScript can be used to develop browser extensions, adding extra functionality and customization options to popular web browsers.
9. IoT (Internet of Things): JavaScript frameworks like Johnny-Five and Cylon.js allow developers to build applications for controlling hardware devices and IoT projects.
10. Automation and Testing: JavaScript can be used with tools like Selenium and Puppeteer to automate repetitive tasks and perform browser testing.