The world's most widely used programming language is JavaScript. It is a high-level, interpreted scripting language primarily known for adding interactive and dynamic features to websites. JavaScript enables developers to create responsive web applications, serve as the backbone of modern web development alongside HTML and CSS, and facilitate various tasks like creating animations, handling events, and asynchronously loading data. Due to its versatility and compatibility with numerous web browsers, JavaScript has become a fundamental technology in building both client-side and server-side applications. Its extensive libraries and frameworks like React, Angular, and Node.js further contribute to its widespread adoption.