JavaScript Basics for Beginners by Mosh Hamedani

Node.js与JavaScript运行环境
本文介绍了JavaScript在浏览器和Node.js中的运行环境,强调了ECMAScript规范的重要性,并详细展示了Node.js的使用方法,包括其命令行界面的常用操作。

Javascript can be run inside a brower or Node which provides a runtime environment for Javascript.


ECMAScript is a specification and Javascript is a programming language that confirms to this specification.


Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine.


shift+ctrl+I //toggle console on or off

shift+ctrl+j //toggle console on or off


$ node

Welcome to Node.js v12.11.0.

Type ".help" for more information.

>

.exit     Exit the repl

.help     Print this help message

.load     Load JS from a file into the REPL session

.save     Save all evaluated commands in this REPL session to a file

 

Press ^C to abort current expression, ^D to exit the repl

>

(To exit, press ^C again or ^D or type .exit)

>

-------------------------------

PS D:\JavaScript Basics for Beginners-transferred\exercise_files_for_javascript_basics_for_beginners> node

Welcome to Node.js v12.11.0.

Type ".help" for more information.

> .help

.break    Sometimes you get stuck, this gets you out

.clear    Alias for .break

.editor   Enter editor mode

.exit     Exit the repl

.help     Print this help message

.load     Load JS from a file into the REPL session

.save     Save all evaluated commands in this REPL session to a file

 

Press ^C to abort current expression, ^D to exit the repl


Visual Studio Code Tip:

select a section of text and then type opening parenthesis, the closing parenthesis will be automatically added.


Notes uploaded to https://github.com/Li-YangZhong/exercise_files_for_javascript_basics_for_beginners-Mosh-Hamedaniby-

Video tutorial can be found at https://www.bilibili.com/video/av55679304

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