02-html - HTML What is the World Wide Web The World Wide...

Info icon This preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Apr 23, 2009 HTML
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 What is the World Wide Web? The World Wide Web (WWW) is most often called the Web The Web is a network of computers all over the world All the computers in the Web can communicate with each other. All the computers use a communication standard called HTTP ( H ypert ext T ransfer P rotocol )
Image of page 2
3 How does the WWW work? Web information is stored in documents called Web pages Web pages are text files stored on computers called Web servers Computers reading the Web pages are called Web clients Web clients view the pages with a program called a Web browser Popular browsers are: Internet Explorer, Netscape Navigator/Communicator, Safari, Mozilla, Konqueror, and Opera Other browsers are: Omniweb, iCab, etc.
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4 How does the browser fetch pages? A browser fetches a Web page from a server by sending a request A request is a standard HTTP request containing a page address A page address looks like this: http://www.someone.com/page.html A page address is a kind of URL ( Uniform Resource Locator )
Image of page 4
5 How does the browser display pages? All Web pages are ordinary text files All Web pages contain display instructions The browser displays the page by reading these instructions. The most common display instructions are called HTML tags HTML tags look like this: <p>This is a Paragraph</p>
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
6 Who makes the Web standards? The Web standards are not made up by Netscape or Microsoft The rule-making body of the Web is the W3C W3C stands for the World Wide Web Consortium W3C puts together specifications for Web standards The most essential Web standards are HTML , CSS and XML The latest HTML standard is XHTML 1.0
Image of page 6
7 What is an HTML File? HTML stands for Hypertext Markup Language An HTML file is a text file containing small markup tags The markup tags tell the Web browser how to display the page An HTML file must have an htm or html file extension .html is preferred .htm extensions are used by servers on very old operating systems that can only handle “8+3” names (eight characters, dot, three characters) An HTML file can be created using a simple text editor Formatted text, such as Microsoft Word’s .doc files, cannot be used in HTML files
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
8 HTML Tags HTML tags are used to mark up HTML elements HTML tags are surrounded by angle brackets , and > Most HTML tags come in pairs, like <b> and </b> The tags in a pair are the start tag and the end tag The text between the start and end tags is the element content The tags act as containers (they contain the element content), and should be properly nested
Image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern