Download
forms n.
Skip this Video
Loading SlideShow in 5 Seconds..
Forms PowerPoint Presentation

Forms

223 Views Download Presentation
Download Presentation

Forms

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Forms Lecture 5

  2. Uses of Forms • Feedback • Guestbook • Survey • e-commerce (i.e. selling)

  3. Processing Forms • You will need a special script (program) that is written in a specific programming language to process your form data. • CGI which stands for Common Gateway Interface is an example of a script that is written in Pearl. • Each element on you form will have a name and value so that the name-value pair (visitor-name=Areej) will be sent to the server. • CGI will process data and return feedback.

  4. GET VS POST • There are two methods in which you can send form data to the server: • Get method: appends form data in the URL http://www.cookwood.com/cgi-bin/cgi.script?visitor_name=Areej&visitor_email=aa7097@yahoo.com&submit=Send+info • Post method: sends form data to the server in a data file (invisibly).

  5. Continued • The get method is less secure and is used for short forms. • The post method is more secure and is used for longer forms.

  6. Getting Scripts • You can create your own scripts or download them from the Internet then customize them. • Some servers require that cgi scripts be located in the cgi-bin directory. • After obtaining the script on your server you can add it to your form.

  7. Example

  8. HTML Code for Previous Form • <html> • <head> • <title>Creating Forms</title> • </head> • <body> • <h2>Ordering your new bed</h2> • <form method="post" action="http://www.cookwood.com/cgi-bin/display_results.pl"> • Name: <input type="text" name="name"> • Address: <input type="text" name="address" size="30"> • <p>City: <input type="text" name="city"> • State: <input type="text" name="state" size="2" maxlength="2"> • Zipcode: <input type="text" name="zip" size="5" maxlength="5"> • Customer Code: <input type="password" name="code" size="8"></p> • <hr> • <b>Type of wood:</b> <select name="woodtype" > • <option value="Mahogany">Mahogany</option> • <option value="Maplewood">Maplewood</option> • <option value="Pine">Pine</option> • <option value="Cherry">Cherry</option> • </select> • <b>Size:</b> <input type="radio" name="size" value="K">King • <input type="radio" name="size" value="Q">Queen • <input type="radio" name="size" value="T">Twin • <input type="radio" name="size" value="S">Single • <p><b>Extras:</b> • <input type="checkbox" name="extras" value="foot">Footboard • <input type="checkbox" name="extras" value="drawers" checked="checked">Drawers (for underneath) • <input type="checkbox" name="extras" value="casters">Casters • <input type="checkbox" name="extras" value="nosqueak" />Squeak proofing</p> • <hr>Please share any suggestions or comments with us: • <textareaname="comments" rows="3" cols="65">Comments?</textarea><hr> • <input type="submit" value="Order Bed"> • <input type="reset" value="Start Over"> • </form> • </body> • </html>