JavaScript plays a fundamental role in modern web development, and its capabilities continue to expand into areas beyond the web, including mobile app development and desktop applications (through frameworks like Electron). Its ubiquity, versatility, and the availability of numerous tools and frameworks have contributed to its enduring popularity in the software development landscape.
JavaScript is primarily used on the client side of web applications, running in a user's web browser. It allows you to create interactive and dynamic web pages, such as validating form data, manipulating the DOM (Document Object Model), and handling user interactions.
JavaScript is supported by all major web browsers, including Chrome, Firefox, Safari, and Edge, making it a standard choice for web development. However, developers often need to account for variations in browser implementations.