JavaScript and Graphics

Question 1

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

Accepted Answer

20

Question 2

What does the following line output?

Accepted Answer

4

Question 3

What function is used to print text to a console?

Accepted Answer

println()

Question 4

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 5

What keyword is used to define a variable in JavaScript?

Accepted Answer

var

Question 6

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

Accepted Answer

readLine()

Question 7

What datatype is the following variable?

Accepted Answer

Float

Question 8

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

Accepted Answer

readInt()

Question 9

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 10

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

Accepted Answer

6

Question 11

What symbol do you use to divide in JavaScript?

Accepted Answer

/

Question 12

What does the following line output?

Accepted Answer

0

Question 13

What does the following line of code NOT do?

Accepted Answer

Store the value as a Float.

Question 14

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

Accepted Answer

leftEye.setPosition(165, 245);

Question 15

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

Accepted Answer

getHeight()

Question 16

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

Accepted Answer

3 + 3

Question 17

What does the following program output?

Accepted Answer

HelloSpongebob

Question 18

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

Accepted Answer

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

Question 19

What symbol do you use to multiply in JavaScript?

Accepted Answer

*

Question 20

Why does the following not display a circle?

Accepted Answer

There is no add(circle); command.

Question 21

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

Accepted Answer

33

Questions 21