What is Javascript?

JavaScript is a high-level, interpreted programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. It is a versatile language primarily used to create interactive effects within web browsers, but it is also used on the server-side with environments like Node.js. JavaScript is known for its dynamic, prototype-based object-orientation and first-class functions.

 

Here are some key features of JavaScript:

• Interpreted Language: JavaScript code is executed line-by-line by the browser's JavaScript engine.
• Dynamic Typing: Variables in JavaScript are not bound to any specific data type.Event-Driven: JavaScript can respond to user actions like clicks, form submissions, and other events.
• Prototype-Based: JavaScript uses prototypes instead of classical inheritance.
• First-Class Functions: Functions in JavaScript are treated as first-class citizens, meaning they can be assigned to variables, passed as arguments, and returned from other functions.

 

Javascript Usecases

JavaScript is widely used for:

• Client-Side Development: Enhancing user interfaces and user experiences on websites.
• Server-Side Development: Using environments like Node.js to build scalable network applications.
• Mobile App Development: Using frameworks like React Native to build cross-platform mobile apps.
• Game Development: Creating browser-based games using libraries like Phaser.