• Interacting with the user:
  • E-commerce, Customising a Request to search engine
• XHTML Forms used to collect information
• POST or GET this information from the browser to the server
• Server-side programs process information sent
• Server often makes a response

Example: Google search for horses for sale. Google GET is:

http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=horses+for+sale&btnG=Google+Search

<form action="/search" name="f" >
<input type="hidden" name="hl" value="en" />
<input type="hidden" name="ie" value="UTF-8" />
<input type="hidden" name="oe" value="UTF-8" />
<input maxLength="256" size="55" name="q" value="" />
<input type="submit" value="Google Search" name="btnG" />
</form>