Learning JavaScript

Questions

1. How do you stop a form submittal if the form data is incomplete or invalid?

2. What event(s) do you want to capture on text-input fields to do JiT validation?

3. Given a selection list, how would you add options based on user input?

4. How do you ensure a name field has only characters and whitespace?

5. Create the JavaScript that captures an event when a radio button is checked and then disables a text-input field if one button is clicked, and enables it if another is clicked.

Answers are provided in the appendix.