introduction - web programming

7/31/2019 Introduction - Web Programming

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Internet

A worldwide collection of interconnected

computers whose users can communicate

with each other and share information.

Computers that are linked together form a

network.


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What is World Wide Web?

Part of the Internet where computers

communicate with each other using a

computer-network protocol called HTTP.

It supports multimedia and consists of a

collection of linked documents called WebPages.


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What is World Wide Web?

A hyperlink, also called a link, is used toconnect a Web page to another Web

page.

A Web site is a collection of Web pages.


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Components of WWW

Web Server

The computer that stores the Web document

that users access.

Web Browser

The software program that accesses the Web

document and displays its content on the

users computer.


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How Does World Wide Web Works?

The World Wide Web is a network of

thousands of computers, all of which fall

neatly into two categories: clients and

servers.

Servers store information and processrequests from clients.

Clients make requests for informationand display that information to end users.


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How Does World Wide Web Works?

History of Internet

History of Internet

(HTML Format)


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Uniform Resource Locator

URL is a Web address.

URLs are used by Web browsing software

to locate and access information on the

World Wide Web.

Ex:

http://www.sti.edu/schools/campuses.htmlProtocol Domain Directory File


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Parts of the URL

Protocol the way in which page isaccessed. Ex. http, ftp

Host Name the system on the Internetwhere the information is stored.Ex.www.netcom.com

Directory the location of the file or otherform of information on the host.
http://www.netcom.com/http://www.netcom.com/


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W3C

World Wide Web Consortium

W3C is working to Standardize the Web

W3C creates and maintains WWWStandards


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HTML

HTML stands forHyperText Markup Language Hyperrefers to creating linked and nonlinear

structures of information.

Textrefers to the words on the computer screen that

we are marking up. Markupis the process of preparing the text to define

how it displays when viewed as pages on the WWW

by marking them with formatting directions conveyed

by notations called tags. (TAGS) Languageis a system of signs used for

communicationwritten and oral.


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Basic HTML Structure

My HTML Document


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Types of HTML Tags

Container tags

have both an opening and a closing and are

used to surround the text within your

document for presentation by the tag.

Empty tags

use only an opening and tell the browser to

perform an instruction such as breaking to thenext line, inserting a horizontal line or

inserting an image.


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Headings


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Paragraph

One of the most commonly used tags in

HTML is the paragraph marker, which is

used to break apart blocks of text into

separate paragraphs.

Ex:

Your Paragraph


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Line Break

Line breaks allow you to decide where the

text will break on a line or continue to the

end of the window.

Ex:

This is the first paragraph, at the very beginning of the body

of this document.
The tag above signals the start ofthis second paragraph.


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Horizontal Rule

The element causes the browser to

display a horizontal line (rule) in your

document.

This text is directly above the rule.

And this text is immediately below.


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Attributes

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