Web Programming with html5, css, and JavaScript

490
ChaptER 10
 
Loops, Additional Controls, Manipulating CSS with JavaScript

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Review Questions
10.2 
while
 Loop
1. 
What’s the term for a loop that repeats forever?
10.3 External JavaScript Files
2. 
External JavaScript files can help reduce redundant code. Why is redundant code bad?
3. 
What’s the file extension for an external JavaScript file?
10.4 Compound Interest Web page
4. 
In an external JavaScript file’s prologue, what goes inside the asterisk box?
5. 
With Chrome, which keys do you press to load its debugger tool?
10.5 
do
 Loop
6. 
When should you use a 
do
loop?
7. 
What are the two possible values a Boolean variable can hold?
10.6 Radio Buttons
8. 
Suppose you have a collection of radio buttons named 
years
. Using 
[]
notation, how can 
you access the first radio button?
9. 
If you have a radio button group with none of the radio buttons selected, what does the 
radio button collection’s 
value
property return?
10. 
What does a radio button object’s 
defaultChecked
property return?
10.7 Checkboxes
11. 
If you’d like to form a collection of checkboxes (as opposed to a standalone checkbox), what 
code do you need to include with each checkbox?
12. 
Is it legal to have a space within a 
class
attribute’s value? Within an 
id
attribute’s value? 
Within a 
name
attribute’s value? Within a 
value
attribute’s value?
10.9