Exploiting the Information World ITEC-2110 - Fall 2000 These exercises are part of your grade! For each exercise that you complete during class you must make record your results to show the TA (or show the TA your screen). If you don't have time to complete everything during class you must record your results and give them to the TA by the next class meeting.

EIW Exercises: JavaScript

1. Form Field Validation

Build an HTML form with the following stuff:

• A space to put a users first name.
• A space to put a users zip code
• A check box labeled "I want to receive annoying email messages"
• A check box labeled "I want more information"
• Submit Button

Set the action for your form to be the URL: http://cgi.cs.rpi.edu/~hollingd/eiw/CGI/simple/simple.cgi

Include JavaScript in your web page so that the following must be true before the browser will submit a request:

• The name and zip code must not be blank
• The first checkbox must be turned on (the "I want annonying email messages" one).

If submission fails, the exact reason for failure must be displayed (you can display it however you want, an alert is probably the easiest way).

2. JavaScript Grade Calculator