What does the following regexp match? \D+

Question 11 options:

1)	The two characters "D+".

2)	One or more non-digit characters.

3)	One or more instances of capital D.

4)	One or more digit characters.

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Question 12 (5 points)

What is the value of variable b after the following JavaScript fragment is evaluated? Why? a = '3'; b = a * 4;

Question 12 options:

1)	NaN (Not a Number) because a is a string variable.

2)	12 because JavaScript coerced the string to a number and multiplied.

3)	34 because JavaScript coerced the number to a string and concatenated.

4)	Undefined because the expression cannot be evaluated.

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Question 13 (5 points)

When would a JavaScript developer use a regular expression.

Question 13 options:

1)	All syntactically-correct JavaScript expressions are regular.

2)	When testing data for conformance to a pattern,

3)	When the developer wants to use a predefined method, such as math.round( ).

4)	To assign the value of an expression to a variable.

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Question 14 (5 points)

Why should a JavaScript developer not use the document.write( ) method in an event handler?

Question 14 options:

1)	It's OK to do this; you're just modifying the HTML page.

2)	Because event handlers execute asynchronously, one cannot tell where on the page the HTML will appear.

3)	The event handler could accidentally be called before the page is fully loaded.

4)	Calling document.write( ) after the page has loaded makes an automatic call to document.open( ).

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Question 15 (5 points)

The JavaScript object that represents the content of the browser's window is called the _____ object.

Question 15 options:

1)

window

2)

browser

3)

document

4)

HTML