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Friday, August 26, 2011

Introduction HTML

What is web page?

A web page is the representation of a document which resides at a remote site. This is key to understanding what the web itself is and the implications. If a "web" document resides on the machine you are working from, the document is called an HTML document.
A web page has the wonderful feature of allowing embedded references to other pages.
Please, let me explain by example. The page you are reading right now resides in Alexandria Virginia, the USA. The author (that’s me) edits the page from a dingy
apartment 5
minutes north of the nations capitol. In fact, I work in DC at NASA HQ. Stop by if you are ever on capitol hill.
When you "visit" this web page you are instructing your browser to go get a copy of  this page from Virginia. The computer then uses the telephone wires to request a copy from the machine in Virginia. The machine in Virginia sends back the copy and viola, there it is on your screen. If the page were to be modified this evening and you came back tomorrow you would see the new web page (ignore caches for now).
Look the below picture




What is HTML?

HTML is a language for describing web pages.
  • HTML stands for Hyper Text Markup Language(HTML)
  • HTML is not a programming language, it is a markup language
  • A markup language is a set of markup tags
  • HTML uses markup tags to describe web pages

HTML Tags

HTML markup tags are usually called HTML tags
  • HTML tags are keywords surrounded by angle brackets like <html>
  • HTML tags normally come in pairs like <b> and </b>
  • The first tag in a pair is the start tag, the second tag is the end tag
  • Start and end tags are also called opening tags and closing tags

HTML Documents = Web Pages

  • HTML documents describe web pages
  • HTML documents contain HTML tags and plain text
  • HTML documents are also called web pages

What You Need

You don't need any tools to learn HTML
You don't need an HTML editor
  • You don't need a web server
  • You don't need a web site

Editing HTML

HTML can be written and edited using many different editors like Dreamweaver and Visual Studio.
However, in this tutorial we use a plain text editor (like Notepad) to edit HTML. We believe using a plain text editor is the best way to learn HTML.

Thank You. Next chapter we will learn How to open note book!!!