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Multiple Choice Quiz
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Programming the Web Using XHTML and JavaScript
Larry Randles Lagerstrom
Putting It All Together: Online Quizzes and Slide Shows
Multiple Choice Quiz
1
Which increments a variable named sum by 1?
A)
sum = sum + 1
B)
sum++
C)
sum += 1
D)
all of the above
2
Which decrements a variable named sum by 1?
A)
sum = sum - 1
B)
--sum
C)
sum--
D)
all of the above
3
Which tests to see whether the browser recognizes Image objects?
A)
browser.version >= 3
B)
Navigator.appversion >= 3
C)
document.images == true
D)
Images == true
4
Suppose a web page includes a form named f with a text field named t1. Which of these statements converts the text enteredin t1 by the user to all lowercase letters and displays it in t1?
A)
document.f.t1 = document.f.t1.toLowerCase()
B)
var lcString = document.f.t1.toLower()
C)
document.f.t1.value = document.f.t1.value.toLowerCase()
D)
document.f.t1.value.toLowerCase()
5
Suppose a web page includes a form named f with a text field named t1. Which of these statements converts the text enteredin t1 by the user to all lowercase letters and checks whether it has the value "BULLWINKLE"?
A)
if(document.f.t1.value.toUpperCase() == "BULLWINKLE") …
B)
if(document.f.t1toUpperCase() == "BULLWINKLE") …
C)
if(document.f.t1.value.touppercase() == "BULLWINKLE") …
D)
if(document.f.t1.value.toUpperCase() == BULLWINKLE.toString()) …
6
Which statement executes the alert every 3 seconds?
A)
TimeOut("alert('wake up!')", 3)
B)
setTimeout('alert("wake up!")', 3000)
C)
callTimeout("alert('wake up!')", 3000)
D)
setTimeOut(alert("wake up!"), 9000/3)
7
Which tests to see whether the browser recognizes Image objects?
A)
Navigator.appversion >= 3
B)
document.images
C)
document.images == true
D)
both B and C
8
Which of the following event handlers calls the function named flyingSquirrel when the browser finishes loading the page?
A)
loadComplete=" flyingSquirrel('RocketJ')"
B)
onload="flyingSquirrel('RocketJ')"
C)
onload='flyingSquirrel("RocketJ")'
D)
both B and C
9
Which of the following function return statements is syntactically correct?
A)
return 12
B)
return 12; exit
C)
exit; return 12
D)
none of the above
10
What is a better name for this function?
function mystery(n){
return n * n
}
A)
sqrt
B)
cube
C)
square
D)
double
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