Definitions
- Node.js is an asynchronous event-driven JavaScript run-time built on Chrome’s V8 JavaScript engine.
What is V8 JavaScript Engine?
- V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++.
- It is used in Chrome and in Node.js. V8 compiles and executes JavaScript source code, handles memory allocation for objects, and garbage collects objects it no longer needs.
- When you run a program V8 engine compiles the JavaScript code using Just in-time (JIT) compilation to make it understandable for OS.
What is JavaScript Run-time?
- A JavaScript run-time is a platform where JavaScript programs can be executed.
- Node.js is an example of JavaScript run-time where you can run JavaScript code on Node.js without requiring the browser.