JavaScript is used in many areas of modern technology because of its flexibility and wide support. It is mainly used in **web development** to build interactive websites and web applications such as social media platforms, online games, and shopping websites. JavaScript is also used on the **server side** with tools like Node.js to handle data, user requests, and databases. In addition, it is used in **mobile app development**, **game development**, **desktop applications**, and even **IoT devices**. Because it works across browsers and platforms, JavaScript has become one of the most important languages in the tech world .