Question 1

Select all that apply . Which of the following are required parts of a function?

Accepted Answer

A)   the local variables
B)   the definition
C)   the name
D)   the parametersE) B) and D)
F) C) and D)

Question 2

If a function definition contains two parameters, two arguments must be included in the function call .

Accepted Answer

A) True 
 B)False

Question 3

The HTML ________ tag provides an area where JavaScript can draw lines and figures .

Accepted Answer

<canvas...

Question 4

The arguments in a function call pass values to the parameters, matched in order from left to right .

Accepted Answer

A) True 
 B)False

Question 5

What, if anything, is wrong with the following JavaScript code?

Accepted Answer

A)   You cannot use document . write()  to display an image; it can only display text .
B)   The outer double quotes are not needed with the document . write()  function .
C)   You cannot use the document . write()  function with JavaScript; it must be used with a form .
D)   Nothing is wrong with this code .E) A) and B)
F) A) and C)

Question 6

When two variables have the same name, but one is global and one is local, the JavaScript program will not run .

Accepted Answer

A) True 
 B)False

Question 7

A(n) ________ is a programming structure with a name, an optional parameter list, and a definition that encapsulates an algorithm .

Accepted Answer

The answer of A(n) ________ is a programming structure with...

Question 8

Programmers rarely use code written by others .

Accepted Answer

A) True 
 B)False

Question 9

Output directly onto a web page from JavaScript is done using the ________ built-in function .

Accepted Answer

A)   document . display() 
B)   print() 
C)   writeln() 
D)   document . write() E) A) and B)
F) A) and C)

Question 10

Select all that apply . What does the following command do?
Ctx . quadraticCurveTo(20,20,20,50) ;

Accepted Answer

A)   The curve will end at the point where x = 20 and y = 50
B)   The curve will start at the point where x = 20 and y = 20
C)   It specifies a curved line .
D)   The curve will start at the point where x = 20 and y = 50E) A) and B)
F) B) and C)

Question 11

When calling a function, it does not matter which order you list the arguments .

Accepted Answer

A) True 
 B)False  False

Question 12

The numbers generated by the Math . random() function

Accepted Answer

A)   will never be repeated
B)   are random because a computer is deterministic
C)   must be multiplied by -1 to change them to positive
D)   are pseudo-randomE) C) and D)
F) B) and C)

Question 13

Given the following JavaScript function, which of the following is NOT a possible result?
Function tossIt()  {
Return Math . random() ;
}

Accepted Answer

A)   0 . 5
B)   0 . 8923871
C)   0
D)   1E) All of the above
F) A) and B) D

Question 14

If you wanted the following function to return only the two values of 0 and 1, how would you re-write line 2?
1 )  function tossIt()  {
2 )  return Math . random() ;
3 )  }

Accepted Answer

A)   return Math . round() ;
B)   return Math . round(Math . random() ) ;
C)   return Math . round(random() ) ;
D)   This cannot be done .E) A) and B)
F) A) and C)

Question 15

Variables in the parameter list of a JavaScript function are declared automatically .

Accepted Answer

A) True 
 B)False

Question 16

The inputs to a function are called

Accepted Answer

A)   parameters
B)   arguments
C)   identifiers
D)   valuesE) B) and C)
F) A) and D)

Question 17

Functions that are written so they can be reused in other programs are considered ________ .

Accepted Answer

The answer of Functions that are written so they can...

Question 18

When you write code to ask the computer to run or execute the statements in a function, this is referred to as ________ the function .

Accepted Answer

calling

Question 19

When a function is called, you write the function's name and include any necessary arguments (that is, input values) inside ________ .

Accepted Answer

The answer of When a function is called, you write...

Question 20

A variable cannot be used as part of a calculation to assign a value to itself . For example, this JavaScript statement would cause an error, assuming myNum is a numeric variable that has been previously declared and initialized:myNum = myNum*3 + 75/myNum;

Accepted Answer

A) True 
 B)False

Exam 19: Programming Functions

Select all that apply . Which of the following are required parts of a function?

Correct AnswerverifiedShow Answer

If a function definition contains two parameters, two arguments must be included in the function call .

Correct AnswerverifiedShow Answer

The HTML ________ tag provides an area where JavaScript can draw lines and figures .

Correct Answerverified<canvas...View AnswerShow Answer

The arguments in a function call pass values to the parameters, matched in order from left to right .

Correct AnswerverifiedShow Answer

What, if anything, is wrong with the following JavaScript code? <script>document . write("<img src = 'puppy . JPG'/>") ;</script>

Correct AnswerverifiedShow Answer

When two variables have the same name, but one is global and one is local, the JavaScript program will not run .

Correct AnswerverifiedShow Answer

A(n) ________ is a programming structure with a name, an optional parameter list, and a definition that encapsulates an algorithm .

Correct AnswerverifiedShow Answer

Programmers rarely use code written by others .

Correct AnswerverifiedShow Answer

Output directly onto a web page from JavaScript is done using the ________ built-in function .

Correct AnswerverifiedShow Answer

Select all that apply . What does the following command do? Ctx . quadraticCurveTo(20,20,20,50) ;

Correct AnswerverifiedShow Answer

When calling a function, it does not matter which order you list the arguments .

Correct AnswerverifiedFalse

The numbers generated by the Math . random() function

Correct AnswerverifiedShow Answer

Given the following JavaScript function, which of the following is NOT a possible result? Function tossIt() { Return Math . random() ; }

Correct AnswerverifiedD

If you wanted the following function to return only the two values of 0 and 1, how would you re-write line 2? 1 ) function tossIt() { 2 ) return Math . random() ; 3 ) }

Correct AnswerverifiedShow Answer

Variables in the parameter list of a JavaScript function are declared automatically .

Correct AnswerverifiedShow Answer

The inputs to a function are called

Correct AnswerverifiedShow Answer

Functions that are written so they can be reused in other programs are considered ________ .

Correct AnswerverifiedShow Answer

When you write code to ask the computer to run or execute the statements in a function, this is referred to as ________ the function .

Correct Answerverifiedcalling

When a function is called, you write the function's name and include any necessary arguments (that is, input values) inside ________ .

Correct AnswerverifiedShow Answer

A variable cannot be used as part of a calculation to assign a value to itself . For example, this JavaScript statement would cause an error, assuming myNum is a numeric variable that has been previously declared and initialized:myNum = myNum*3 + 75/myNum;

Correct AnswerverifiedShow Answer

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<canvas...
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False

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D

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calling

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