CGD Unit 2: JavaScript and Graphics

Question 1

What will the following code print to the screen?: println(3 + 3);

Accepted Answer

6

Question 2

What are the coordinates of the center of a JavaScript canvas?

Accepted Answer

(getWidth()/2, getHeight()/2)

Question 3

What will the following code print to the screen?: println("3 + 3");

Accepted Answer

3 + 3

Question 4

What does the following line of code NOT do?

Accepted Answer

Store the value as a Float.

Question 5

What symbol do you use to divide in JavaScript?

Accepted Answer

/

Question 6

What will the following code print to the screen?: println("3" + "3");

Accepted Answer

33

Question 7

The left Eye is at (165, 225), how would I move it down 20px?

Accepted Answer

leftEye.setPosition(165, 245);

Question 8

What function is used to print text to a console?

Accepted Answer

println()

Question 9

The left Eye is at (165, 225), how should I position the right eye so it is 70px to the right?

Accepted Answer

rightEye.setPosition(235, 225);

Question 10

What datatype is the following variable?

Accepted Answer

Float

Question 11

What does the following line output?

Accepted Answer

0

Question 12

What does the following program output?

Accepted Answer

HelloSpongebob

Question 13

Which function would you use to ask a user to enter text?

Accepted Answer

readLine()

Question 14

What keyword is used to define a variable in JavaScript?

Accepted Answer

var

Question 15

What is the diameter of the following circle: var circle = new Circle(10);

Accepted Answer

20

Question 16

Which function would you use to ask a user to enter a whole number?

Accepted Answer

readInt()

Question 17

How will the bottom edge of the rectangle be positioned on the canvas?

Accepted Answer

It will align with the bottom of the canvas.

Question 18

What symbol do you use to multiply in JavaScript?

Accepted Answer

*

Question 19

What function can you call to get the height of a JavaScript canvas?

Accepted Answer

getHeight()

Question 20

Why does the following not display a circle?

Accepted Answer

There is no add(circle); command.

Question 21

What does the following line output?

Accepted Answer

4

Questions 21