
Code.Hs #3 | JavaScript and Graphics Quiz

Quiz
•
Computers
•
10th Grade
•
Hard
Joseph Armanious
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A store has 20 apples in its inventory. How can you store this information in a JavaScript variable?
var numApples == 20;
20 = numApples;
var numApples = 20;
var num apples = 20;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You want to read input from the user to know how many apples they would like to buy. Which statement should you use to read in a number from the user?
var applesToBuy = readLine("How many apples would you like? ");
var applesToBuy = println("How many apples would you like? ");
var applesToBuy = readInt("How many apples would you like? ");
var applesToBuy = nextInt("How many apples would you like? ");
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You are splitting up all of your apples equally between 3 people. Which statement below will calculate how many apples will be left over?
var leftOver = numApples / 3;
var leftOver = 3 / numApples;
var leftOver = numApples % 3;
var leftOver = 3 % numApples;
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a graphics canvas, what are the coordinates of the bottom right corner of the window?
0, 0
0, getWidth()
getHeight(), getWidth()
getWidth(), getHeight()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a graphics canvas, what are the coordinates of the center of the canvas?
getWidth(), getHeight()
getWidth() / 2, getHeight() / 2
getHeight() - getWidth(), getWidth() - getHeight()
getHeight() / 2, getWidth() / 2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the following code: var size = 20; var x = 100; var y = 200; var ball = new Circle(size); ball.setPosition(x, y); What is the meaning of the x variable?
The x coordinate of the center of the circle
The x coordinate of the left edge of the circle
The radius of the circle
The position of the circle
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
But when we run this code, we don’t see the circle. What is missing from our start function?
We never set the circle’s radius. We need to add the line circle.setRadius(40); after line 4
We are setting the position of the ball to be off the canvas. We need to change line 3 to be circle.setPosition(0, 0);
We are creating the circle incorrectly. We need to specify the width and height. We need to change line 2 to be var circle = new Circle(40, 40);
We create the circle and position it correctly on the screen, but we never add it to the screen. We need to add the line add(circle); after line 4
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