1.node.js, server-side javascript, which allows running javascript code in the backend (out of the browser environment).
2. The programming mode of event-driven and asynchronous I/O (single-threaded) is its core.
3.node.js' javascript engine is v8, from Google Chrome project. V8 is currently the fastest javascript engine in the world.
4.node.js has built-in http server support, which means you can easily implement a combination of a website and a server.
5.commonnjs attempts to define a set of APIs used by ordinary applications, thereby filling the shortcomings of the JavaScript standard library being too simple. node.js is the implementation of commonjs.
6.node package manager (npm), which can be used to install some applications online.
7. The basic usage of node: node xxx.js (script file name) or node -e "xxxxxxxxx" (code that can be executed directly)
8.node Enter --> repl(read-eval-print loop) mode, press ctrl+c twice in a row to exit repl mode.
9. Use supervisor to refresh the script, for debugging, install: npm install -g supervisor Start the application: supervisor app.js
10. Modules are the basic components of node.js applications, and files and modules correspond one by one.
11.node.js package is a directory, with package.json in the top-level directory
12. Use node to start angular-seed-master: node scripts/web-server.js