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Programming the Web Using XHTML and JavaScript
Larry Randles Lagerstrom

Putting It All Together: Online Quizzes and Slide Shows

True or False



1

Suppose a web page includes a form named f with a checkbox named cb1 that the user has checked. Then this statement :
if(document.f.cb1.selected == true) alert(true)
is equivalent to:
if(document.f.cb1.checked) alert(true)
A)TRUE
B)FALSE
2

The second argument to the setTimeout() function is a number that specifies the time interval in microseconds
A)TRUE
B)FALSE
3

The first argument to the setTimeout() function is a string that specifies the name of a function to call.
A)TRUE
B)FALSE
4

When the following two statements are executed, 1 is displayed in an alert box and then 2.
setTimeout("alert(2)", 5000)
alert(1);
A)TRUE
B)FALSE
5

The expression (document.images == true) tests whether there are any images displayed on the current web page.
A)TRUE
B)FALSE
6

The expression (document.images == true) tests whether the browser recognizes objects of type Image.
A)TRUE
B)FALSE
7

The browser generates a load event as soon as it starts loading a web page.
A)TRUE
B)FALSE
8

The expression if ((p && q) || (!t)) alert(true) is equivalent to if (p && q) || (!t) alert(true)
A)TRUE
B)FALSE
9

The expression ("yes" == "YES") evaluates to true because JavaScript ignores the differences in case when comparing strings.
A)TRUE
B)FALSE
10

The expression (true == "true") evaluates to true because JavaScript automatically converts the string "true" into the boolean constant true when making this comparison.
A)TRUE
B)FALSE




McGraw-Hill/Irwin