Learn HTML5

Basics of Web Application

Basics of Web Application: -

ü  Application

ü  What is Internet

ü  HTTP

ü  Client-server Architecture

ü  world wide web

ü  Web page

ü  Web Site

ü  Web Application

 

What is Application?

ü  It is a program that runs based on the operating system

ü  Programs is a collection of statements or instructions to the system

ü  For example, a Statement instructs the computer to store a value. Another statement instructs the computer to do addition of numbers.

ü  Examples: Notepad, MS Word, Google, face book, flipkart etc

 

What is Internet?

The Internet is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices.


 

What is HTTP?

Hypertext Transfer Protocol (HTTP) is an application-layer protocol for transmitting hypermedia documents, such as HTML.

It was designed for communication between web browsers and web servers.


What is Client-server Architecture?

Client-server architecture is also called of the “Client/Server Network” or “Network computing Model”.

 

In this architecture all services and requests are spread over the network.

 

Its functionality like as distributed computing system .

 

All components are performing their tasks independently from each other.


The client-server model describes how a server provides resources and services to one or more clients. 


Client: - It is a machine or device (desktop, laptop, phone…) Which can access the data from server as request through internet.


Server:-  it is machine or device (computer) which can provide services to the client as a response through internet

 

What is the world wide web?

The web is a way to view and share information over the internet.

That information, be it text, music, photos or videos or whatever, is written on web pages served up by a web browser.

 

What is Browser?

        ü  browser is software that is used to access the internet.

        ü  The browser sends a request to server to get the web page.

        ü  Browser provides navigation among web pages

        ü  Browser executes the html, css, java script programs and displays corresponding output to the user.

        ü  browser lets you visit websites and do activities within them like login, view multimedia, link from one site to another, visit one page from another, print, send and receive email, among         many other activities

Examples:

ü  Google Chrome

ü  Apple Safari. ...

ü  Microsoft Internet Explorer and Edge. ...

ü  Mozilla Firefox.

 

What is Web page?

A web page is formatted document it can be transmitted across the internet. It is created by using HTML(Hyper Text Markup language) it should save .html or .htm extension and  execute on browser only.

 

What is Web site?

Is a Collection of web pages hyper linked to a home page is called Web site

Eg:- cfamily.com,cfamilycomputers.com,iamdiabetic.in,amazon.com,gmail.com, etc..

 

What is Web application?

It is a set of programs that are that are running on the browser to interact with the user.

 

It is responsible to store information temporarily.

 

It is responsible to interact with sever i.e. sending request to server and get response from server.