1 HTML Basics Dr. Awad Khalil Computer Science Department AUC
2 Markup Languages SGML, the Standard Generalized Markup Language (1980), is a more powerful ancestor of XML. SGML is a text-based meta- language used to describe application languages. SGML is a text- based language that can be used to markup data – that is, add metadata – in a way which is self describing. Although SGML has many useful features, the complexity of SGML makes it extremely hard to use and learn. HTML, the HyperText Markup Language (1989), is one of the best known applications of SGML. HTML was defined to be a universal markup language for the display of information, and the linking of different pieces of information. The idea was that any HTML document (or web page) would be presentable in any application that was capable of understanding HTML (termed a web browser ).
3 HTML HTML is the document formatting language used to design most Web pages. It is a simple, yet powerful, platform-independent document language. Originally developed by Tim Berners-Lee while at CERN but was standardized in November In early 2000, W3C produced XHTML 1.0 as a reformulation of HTML 4 in XML.
4 DHTML Consists of number of technologies freely available for download Used for developing high-performance, Web-based applications Much of application’s work performed directly on client rather then on server or Internet Two versions Microsoft Netscape
5 HTML HTML Tags: HTML tags cover formatting, structural, and semantic markup of an HTML document. Good morning Egypt In 1989, Tim Brayners developed the first version of HTML Page1 Good Morning, Egypt
6 HTML Document Structure
Outline 7 Main.html Program Output 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Welcome Welcome to XHTML! The text between the title tags appears as the title of the web page. Elements between the body tags of the html document appear in the body of the web page
8 HTML The Year 2000 The Millenium Approaches And You’re Invited! Please come to my Celebration of the New Millenium BBQ & Poetry Reading to be held on December 31 st at 7:00 p.m. Anyone reading this page is invited; send me mail using the link below for more details. Awad KHALIL © 1999, Awad KHALIL
9 W3C The World Wide Web Consortium (W3C) was started in 1994, according to their web site ( ), “to lead the World Wide Web to its full potential by developing common protocols that promote its evolution and ensure its interoperability”. W3C produces recommendations which describe the basic building blocks of the web. HTML recommendation is the most famous contribution of W3C to the web. In 1998, W3C released recommendations for XML 1.0, XSLT, and XPath.
10 W3C XHTML Validation Service Validating an XHTML document. (Courtesy of World Wide Web Consortium (W3C).)
11 W3C XHTML Validation Service XHTML validation results. (Courtesy of World Wide Web Consortium (W3C).)
Outline 12 Header.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Headers Level 1 Header 16 Level 2 header 17 Level 3 header 18 Level 4 header 19 Level 5 header 20 Level 6 header The font size of the text between tags decreases as the header level increases. Every XHTML document is required to have opening and closing html tags.
Outline 13 Program Output Select a header based on the amount of emphasis you would like to give that text.
Outline 14 Links.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Links Here are my favorite sites Click on a name to go to that page Deitel Prentice Hall Yahoo! USA Today Text between strong tags will appear bold. Elements placed between paragraph tags will be set apart from other elements on the page with a vertical line before and after it. Linking is accomplished in XHTML with the anchor (a) element. The anchor links to the page that’s value is given by the href attribute. The text between the a tags is the anchor for the link.
Outline 15 Program Output Clicking on the “Deitel” link will open up the Deitel homepage in a new browser window.
Outline 16 songs.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Links Here are my favorite singers Click on a name to hear a song !! Om Kalthoum Abdel Halim Hafez Fayrouz Kazem El Saher Text between strong tags will appear bold. Elements placed between paragraph tags will be set apart from other elements on the page with a vertical line before and after it. Linking is accomplished in XHTML with the anchor (a) element. The anchor plays the song that’s value is given by the href attribute. The text between the a tags is the anchor for the link.
Outline 17 vidoenet.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Links Here is your first lesson in networking Just click to see the video !! How to connect? Here is your first lesson in Geography Just click to see the video !! Earth !! Text between strong tags will appear bold. Elements placed between paragraph tags will be set apart from other elements on the page with a vertical line before and after it. Linking is accomplished in XHTML with the anchor (a) element. The anchor plays the video that’s value is given by the href attribute. The text between the a tags is the anchor for the link.
Outline 18 Contact.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Contact Page My address is 17 egyptone.com 18. Click the address and your browser will open an 19 message and address it to me To create an link include “mailto:” before the address in the href attribute.
Outline 19 Program Output When a user clicks on an link, an message addressed to the value of the link will open up.
Outline 20 Picture.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Welcome <img src = "xmlhtp.jpg" height = "238" width = "183" 16 alt = "XML How to Program book cover" /> 17 <img src = "jhtp.jpg" height = "238" width = "183" 18 alt = "Java How to Program book cover" /> The value of the src attribute of the image element is the location of the image file. The height and width attributes of the image element give the height and width of the image. The value of the alt attribute gives a description of the image. This description is displayed if the image cannot be displayed.
Outline 21 Program Output The second image could not be displayed properly, so the value of its alt attribute is displayed instead.
Outline 22 Nav.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Navigation Bar <img src = "buttons/links.jpg" width = "65" 19 height = "50" alt = "Links Page" /> <img src = "buttons/list.jpg" width = "65" 23 height = "50" alt = "List Example Page" /> <img src = "buttons/contact.jpg" width = "65" 27 height = "50" alt = "Contact Page" /> <img src = "buttons/header.jpg" width = "65" 31 height = "50" alt = "Header Page" /> <img src = "buttons/table.jpg" width = "65" 35 height = "50" alt = "Table Page" /> Placing an image element between anchor tags, creates an image that is an anchor for a link. A line break will render an empty line on a web page.
Outline 23 Nav.html Program Output <img src = "buttons/form.jpg" width = "65" 39 height = "50" alt = "Feedback Form" /> Using an image as an anchor works exactly the same as using text. Clicking on the image entitled “links” brings the user to the page on the right.
Outline 24 Contact2.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Contact Page My address is Click on the address and your browser will 21 automatically open an message and address it to my 22 address All information on this site is © 27 Deitel & Associates, Inc tags, it can be set in subscript --> 31..., and it can be set into --> 32 --> 33 You may download 3.14 x characters worth of information from this site. 35 Only one download per hour is permitted. The horizontal rule element renders a horizontal line on the web page. Special characters are denoted with an ampersand (&) and an abbreviation for that character. In this case, the special characters are ampersand and copyright.
Outline 25 Contact2.html Program Output Note: < ¼ of the information 38 presented here is updated daily Text placed between del tags is struck out.. Text placed between the sup tags is superscripted. Text placed between the sub tags is subscripted.
Outline 26 Links2.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 " Internet and WWW How to Program - Links Here are my favorite sites Click on a name to go to that page Deitel Prentice Hall Yahoo! USA Today The entries in an unordered list must be included between the and tags. An entry in the list must be placed between the and tags.
Outline 27 Program Output Each entry in the list is rendered on its own line with a bullet before it.
Outline 28 List.html 1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 3 " Internet and WWW How to Program - Lists The Best Features of the Internet You can meet new people from countries around 19 the world. 20 You have access to new media as it becomes public: tag --> New games 27 New applications For business 32 For pleasure Entries for an ordered list must be placed between the and tags. By inserting a list as an entry in another list, lists can be nested.
Outline 29 List.html 36 Around the clock news 37 Search engines 38 Shopping 39 Programming XML 43 Java 44 XHTML 45 Scripts 46 New languages Links 55 Keeping in touch with old friends 56 It is the technology of the future! My 3 Favorite CEOs Harvey Deitel 66 Bill Gates 67 Michael Dell 68 The type attribute of the ordered list element allows you to select a sequence type to order the list. Text placed between the em tags will be italicized.
Outline 30 List.html Program Output Some sequence types available to order lists are roman numerals, letters and numbers. Nested lists are indented underneath the main list.