FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 19: Programming Functions

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

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 ) }

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

E) A) and C)
F) B) and D)

Correct Answer

verified

Show Answer

Question 2

Short Answer

Review LaterAdd Note

Review Later

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

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

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

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;

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

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

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

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

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

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

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

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

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

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

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

The numbers generated by the Math . random() function

Programmers rarely use code written by others .

The inputs to a function are called

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

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