- what
Node.js：Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js' package ecosystem, npm, is the largest ecosystem of open source libraries in the world.
npm:(Node.js package manager)，npm is the package manager for JavaScript and the world’s largest software registry. Discover packages of reusable code — and assemble them in powerful new ways.
electron：Build cross platform desktop apps with JavaScript, HTML, and CSS。
- relation：node.js是运行在服务端的javascript，electron是基于Node.js的上层框架，npm用来管理node.js.