JavaScript is a powerful, flexible, and widely used programming language originally created for web application development. Since then, it has evolved into one of the most popular programming languages globally, with a broad range of applications on both the client-side (frontend) and server-side (backend). Key aspects of JavaScript: • Interpreted language: JavaScript is executed in browsers on the client side without the need for prior compilation. • Multi-paradigm: Supports various programming styles, including imperative, object-oriented, and functional approaches. • Interaction with HTML/CSS: JavaScript can manipulate HTML elements and CSS styles, enabling the creation of interactive web pages. • Asynchronous programming: JavaScript supports asynchronous programming, crucial for operations such as server requests, file processing, and timers. • Widely used in web development: JavaScript is a primary language for developing web applications and sites. • Node.js: With Node.js, JavaScript can also be used on the server to create backend applications.