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CSCI 1101 Intro to Computers

Explore the key concepts of HTML, including hypertext and markup language. Discover the maximum number of elements a web page can have and learn about the design considerations for creating impactful web pages. Compare the bottom-up and top-down approaches for developing HTML documents.

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CSCI 1101 Intro to Computers

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  1. CSCI 1101 Intro to Computers 7.1 Learning HTML

  2. Introduction • Web pages are written using HTML • Two key concepts of HTML are: • Hypertext (links Web pages together) and • Markup (embeds special tags in Web pages to structure and format them) • HTML = Hyper Text Markup Language

  3. A Web page, regardless of how complex it looks, can have a maximum of eleven elements. They are: text, hyperlinks, color, lists, images, image maps, sound, video, forms, frames, and tables Limits on web page content

  4. Design of Web pages • A Web page is content and design. • The design should enhance content presentation. • Page design is related to the goal of the page whether it is to sell a product or convey information. • When designing a Web page, Web authors should take advantage of HTML power such as links, colors, etc.

  5. What is a Markup language? • HTML Markup language uses tags • HTML tags convert Web page design into an actual Web page that can be viewed in a browser • HTML tags surround page content to format it

  6. How are html files displayed? • Web browsers render (interpret) HTML tags and display their results • Each web browser has it's own peculiarities and personality • An experienced web author knows to test their pages in a variety of web browsers

  7. What is a markup tag? • The generic format of an HTML tag is<tag_name> content goes here </tag_name> • HTML tags are categorized as • One-sided tags • Tags that do not require a "closing" tag • Two-sided tags • Matched pair tags - the closing tag uses the </ format. • Many HTML tags have attributes to provide finer control of the tag formatting results

  8. Bottom-up approach: write HTML code in a text editor, and then view the Web page in a browser Steps: Open a text editor Enter text and tags Save file as xxx.html Open the file in a browser to view the Web page Repeat above steps if you need to debug the page Top-down approach: build the Web page elements using an HTML editor, and then view the HTML code later Steps: Open an HTML editor Add HTML elements using the editor’s GUI Save the automatically generated HTML code in a file as xxx.html Exit the editor and view the page Methods of developing HTML documents

  9. Bottom-up Advantages Can use any text editor Allows complete control over page elements Disadvantages Requires understanding and knowing HTML code Elaborate designs can be time consuming Top-down Advantages Quick and easy to get started Elaborate designs easy to create Disadvantages Requires HTML editor software Errors can be difficult to trace and find Easy to create a page without any understanding of what is truly required Advantages and disadvantages for each

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