Which code would put the circle at this point in the screen?

setPosition(getWidth(), getHeight());

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

rightEye.setPosition(235, 225);

What is the position of this large red circle?

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

Why does the following not display a circle?

There is no add(circle); command.

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

It will align with the bottom of the canvas.

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Graphics in Javascript (tm)

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A review of the concepts from #codehs #javascript intro chapter. #compsci #programming

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Questions 21

Answers

1
What will the following code print to the screen?: println("3" + "3");
6
3 + 3
33
The program will crash.
2
What does the following program output?
HelloSpongebob
Hello Spongebob
Hello name
Helloname
3
The left Eye is at (165, 225), how would I move it down 20px?
leftEye.setPosition(185, 225);
leftEye.setPosition(165, 245);
leftEye.setPosition(165, 205);
leftEye.setPosition(145, 225);
4
What will the following code print to the screen?: println("3 + 3");
6
The program will crash.
3 + 3
33
5
What function is used to print text to a console?
printLn()
println()
printLine()
PRINT()
6
What does the following line output?
8
The program will not run because of a syntax error
4
2
7
What is the diameter of the following circle: var circle = new Circle(10);
20
5
10
Can't be determined.
8
What are the coordinates of the center of a JavaScript canvas?
(0, 0)
(getWidth(), getHeight())
(getHeight()/2, getWidth()/2)
(getWidth()/2, getHeight()/2)
9
Which code would put the circle at this point in the screen?
setPosition(getWidth()/2, 0);
setPosition(getWidth(), getHeight());
setPosition(0,0);
setPosition(getWidth()/2, getHeight()/2);
10
The left Eye is at (165, 225), how should I position the right eye so it is 70px to the right?
rightEye.setPosition(235, 225);
rightEye.setPosition(165, 155);
rightEye.setPosition(95, 225);
rightEye.setPosition(165, 295);
11
Which function would you use to ask a user to enter a whole number?
readString()
readLine()
readInt()
readFloat()
12
What keyword is used to define a variable in JavaScript?
def
var
variable
int
13
What is the position of this large red circle?
setPosition(getWidth(), getHeight())
setPosition(middle, middle)
setPosition(getWidth()/2, getHeight()/2)
setPosition(0,0)
14
Which function would you use to ask a user to enter text?
readFloat()
readString()
readLine()
readInt()
15
3 % 2 = ?
2
1.5
0
1
16
What function can you call to get the height of a JavaScript canvas?
screenHeight()
height()
getScreenHeight()
getHeight()
17
What will the following code print to the screen?: println(3 + 3);
6
3 + 3
33
The program will crash.
18
Which shape is created here?
A Triangle
A Square
A Circle
A Trapezoid
19
Why does the following not display a circle?
There is no add(circle); command.
There is no println(circle); command.
Color.yellow is an invalid color.
The circle is located off the canvas.
20
How will the bottom edge of the rectangle be positioned on the canvas?
It will be 100px above the bottom of the canvas.
It will align with the middle of the canvas.
It will be 100px below the bottom of the canvas(Off screen).
It will align with the bottom of the canvas.
21
What datatype is the following variable?
Number
Float
Integer
String

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