V8
V8 is an open-source, high-performance JavaScript and WebAssembly engine developed by Google. It compiles JavaScript code directly to native machine code before execution, enabling fast execution in environments like web browsers and server-side runtimes. It is primarily used in Google Chrome, Node.js, and other applications that require efficient JavaScript processing.
Developers should learn V8 when working on performance-critical JavaScript applications, such as web servers with Node.js, browser extensions, or embedded systems, as it optimizes execution speed and memory usage. It is essential for understanding how JavaScript engines work, debugging performance issues, and contributing to projects that rely on V8, like Chrome or Node.js development.