WEB

Protocols:

• HTTP Protocol
• An application-level protocol for data communication
• Stateless
• Client-Server architecture
• HTTP requests
• HTTP response
• How does it work?
• A start line
• Request Line
  

  GET /home.html HTTP/1.1
  

• Response line
  

  HTTP/1.1 200 OK
  

• Zero or more header fields followed by CRLF
• Emtpy lines indicating the end of the header section
• A message body is optional
• W3 HTTP Status Code
• HTTP Status Codes
  
• UI - Frontend
• HTML - for content
• CSS - for presentation
• JavaScript - for behavior
• JavaScript libraries (jQuery, React, Node.js, AJAX)
• Server side (PHP, Python, Java)
• Web application frameworks (Ruby on Rails, JavaScript MEAN stack)
• Web application testing (Selenium, TestNG, Cucumber, JUnit)

Languages:

• HTML 
• CSS 
• PHP 
• JavaScript
• Mobile.

HTML5 Main Features

• Video support
• Ausio support
• Canvas element
• Offline storage
• New form elements
• Drag-and-Drop
• Geolocation
• Local storage
• Compatibility Table of HTML5, CSS3, SVG