Wiley 978-0-7645-8820-4 Datasheet

Browse online or download Datasheet for Software manuals Wiley 978-0-7645-8820-4. Wiley Web Standards Programmer's Reference: HTML, CSS, JavaScript, Perl, Python, and PHP User Manual

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The Basics of HTML
Before you begin to code HTML pages for the Web, it is important to understand some of the tech-
nology, standards, and syntax behind the Web. This chapter introduces you to HTML and answers
the following questions:
What is the World Wide Web?
How does the Web work?
What is HTML?
What is the basic syntax of HTML?
Subsequent chapters in this section delve into the specifics of HTML, covering various tags you
can use to format your pages.
What Is the World Wide Web?
The Internet is a worldwide network of computers all attached in a global networking scheme.
This scheme, known as TCP/IP, assigns and uses unique addresses to communicate between com-
puters on the Internet.
The World Wide Web is a network of computers that, using the Internet, are able to exchange text,
graphics, and even multimedia content using standard protocols. Web servers special computers
that are set up for the distinct purpose of delivering content are placed on the Internet with spe-
cific content for others to access. Web clients which are generally desktop computers but can also
be dedicated terminals, mobile devices, and more access the servers’ content via a browser. The
browser is a specialized application for displaying Web content.
For example, Google maintains many Web servers that connect to their database of content found
on the Web. You use your home or office PC to connect to the servers via a browser such as
Microsoft’s Internet Explorer or Mozilla’s Firefox (shown in Figure 1-1).
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COPYRIGHTED MATERIAL
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Summary of Contents

Page 1 - COPYRIGHTED MATERIAL

The Basics of HTMLBefore you begin to code HTML pages for the Web, it is important to understand some of the tech-nology, standards, and syntax behind

Page 2

<tr><td>Cell 3</td><td>Cell 4</td></tr></table>Notice how the tags are closed in the opposite order they wer

Page 3 - Creating a Web

However, XHTML does not allow attributes without values (for example, checked).Instead, you must supply a value, such as the following:<input type=

Page 4 - HTTP: The Protocol of the Web

At this point, you may be asking yourself, “Why don’t I need a Web server?” The reason is simple: Thebrowser loads and interprets the HTML file from t

Page 5 - The Basics of HTML

Figure 1-1If you were to make a diagram of the relationships between all the technical components involved inrequesting and delivering a document over

Page 6

Creating a WebThe Web was created as a replacement for the aging Gopher protocol. Gopher allowed documents acrossthe Internet to be linked to each oth

Page 7 - Hypertext Markup Language

However, the Web doesn’t operate as the diagram would have you believe. One Web site doesn’t go toanother for information; your browser requests the i

Page 8

Although HTTP is the protocol of choice for the Web, most browsers support additional protocols suchas the File Transfer Protocol (FTP).Much like othe

Page 9 - HTML Concept and Syntax

<P>This is a placeholder page installed by the <AHREF=”http://www.debian.org/”>Debian</A>release of the <A HREF=”http://www.apach

Page 10 - Chapter 1

❑ Information about the document being delivered (date modified, size, encoding, and so on)Last-Modified: Sat, 26 Oct 2002 09:12:14 GMTETag: “19b498-1

Page 11 - Your First Web Page

HTML 1.0HTML 1.0 was never specified by the W3C, as it predated the organization. The standard supported a fewbasic tags and graphics, although the la

Page 12

When the formatting needs to change, the CSS document alone can be updated, and the changes arethen reflected in all documents that use that style she

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