Things you did not knew about JS- Part-1

When dinosaurs lived:

• JavaScript's design was influenced by several programming languages: namely Scheme, Self, Java, C, Perl.

The core language does "NOT" includes:

• Read keyboard input
• Display output on a screen
• Access the file system
• Make HTTP requests
• Manipulate web pages
• Create windows or dialogs These capabilities are provided by the host environment.

Host Environment means the web browser, Or Node.js (a run time "environment").

Host environments provide I/O

1. Web Browser
   • console.log()
   • document
   • window
   • fetch()
   • alert()
2. Node.js
   • console.log()
   • fs
   • http
   • process
   • readline

Although console.log() is commonly used, it is not part of the ECMAScript specification. It is provided by browsers, Node.js, and other JavaScript environments.

The core language includes:

• Numbers (Number, BigInt)
• Text (String)
• Booleans (Boolean)
• Arrays (Array)
• Objects (Object)
• Sets (Set)
• Maps (Map)
• Dates (Date)
• Regular expressions (RegExp)
• Promises (Promise)
• JSON
• Math utilities (Math)

Most Common Uses

1. One of Node.js's most common uses is building web servers and APIs.
2. Node.js is also convenient for writing command-line utilities that automate tasks such as:
   • Reading and writing files
   • Renaming or organizing files
   • Processing CSV or JSON data
   • Running build scripts similar to python
   • Automating deployments
   • Call REST APIs (fetch, http, https)

To be continued...