V8

V8 is an open-source JavaScript engine developed by Google that powers popular browsers like Chrome. It converts JavaScript code into machine language, allowing websites and web applications to run quickly and efficiently. V8 optimizes performance through techniques like just-in-time compilation, which translates code into machine instructions on the fly. This enables smooth, fast interactions and responsive user experiences. Essentially, V8 acts as the core engine that understands and executes JavaScript code smoothly within the browser environment.