Sams Teach Yourself HTML 4 in 24 Hours

By Dick Oliver

• Table of Contents
  • Copyright
  • About the Author
  • Acknowledgments
  • Tell Us What You Think!
  • Put Your HTML Page Online Today
  • I. Your First Web Page
  • Hour 1. Understanding HTML and XML
  • Hour 2. Create a Web Page Right Now
  • Hour 3. Linking to Other Web Pages
  • Hour 4. Publishing Your HTML Pages
  • II. Web Page Text
  • Hour 5. Text Alignment and Lists
  • Hour 6. Text Formatting and Font Control
  • Hour 7. Email Links and Links Within a Page
  • Hour 8. Creating HTML Forms
    • How HTML Forms Work
    • Creating a Form
    • Text Input
    • Identifying Each Piece of Form Data
    • Including Hidden Data
    • Check Boxes
    • Radio Buttons
    • Selection Lists
    • Text Areas
    • Submit!
    • Creating a Custom Submit Button
    • Summary
    • Q&A
    • Workshop
  • III. Web Page Graphics
  • Hour 9. Creating Your Own Web Page Graphics
  • Hour 10. Putting Graphics on a Web Page
  • Hour 11. Custom Backgrounds and Colors
  • Hour 12. Creating Animated Graphics
  • IV. Web Page Design
  • Hour 13. Page Design and Layout
  • Hour 14. Graphical Links and Imagemaps
  • Hour 15. Advanced Layout with Tables
  • Hour 16. Using Style Sheets
  • V. Dynamic Web Pages
  • Hour 17. Embedding Multimedia in Web Pages
  • Hour 18. Interactive Pages with Applets and ActiveX
  • Hour 19. Web Page Scripting for Non-Programmers
  • Hour 20. Setting Pages in Motion with Dynamic HTML
  • VI. Building a Web Site
  • Hour 21. Multipage Layout with Frames
  • Hour 22. Organizing and Managing a Web Site
  • Hour 23. Helping People Find Your Web Pages
  • Hour 24. Planning for the Future of HTML
  • VII. Appendixes
  • A. Readers' Most Frequently Asked Questions
  • B. HTML Learning Resources on the Internet
  • C. Complete HTML 4 Quick Reference
  • D. HTML Character Entities

Including Hidden Data

Want to send certain data items to the server script that processes a form but don't want the user to see them? Use the input type="hidden" attribute. This attribute has no effect on the display at all; it just adds any name and value you specify to the form results when they are submitted.

You might use this attribute to tell a script where to email the form results. For example, the following might indicate that the results should be mailed to me@mysite.com :

<input type="hidden" name="mail_to" value="me@mysite.com" />

For this attribute to have any effect, someone must create a script or program to read this line and do something about it. My ISP's form script uses this hidden value to determine where to email the form data.

Most scripts require at least one or two hidden input elements. Consult the person who wrote or provided you with the script for details.

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