CodeHS Javascript Unit 1 Quiz Review

What is the purpose of using a for loop in code?

• To do something if a condition is true

• To do something while a condition is true

• To repeat something a fixed number of times

• To make programs run faster

In the following code, what would be a good Postcondition to write?

• 1. Karel is on a spot with a tennis ball facing north.

• 1. Karel ends one spot above a tennis ball facing East.

• 1. Karel is on the same position but on top of a ball.

• 1. Karel is facing East.

How can we improve the following program?

• Break down this program into more functions

• Use a for loop to repeat the move command

• Use a while loop to repeat the move command

• Fix the indentation of this program

In this code, how many times is the dance function called and how many times is it defined?

• Called 1 time, defined 1 time

• Called 1 time, defined 3 times

• Called 3 times, defined 1 time

• Called 3 times, defined 3 times

What’s wrong with this code?

• The go function is called twice

• 1. The go function has a syntax error

• The go function has been defined twice

• go is not a command that Karel understands

How many total times will Karel move in this program?

• 1

• 5

• 6

• 7

Why is the following command an invalid Karel command?

turnleft();

• 1. It should end in a colon rather than a semicolon

• 1. The l should be a capital L

• 1. It should start with a capital T

• 1. This command is correct

Which of the following is the correct way to define a turnRight function in Karel?

• 
• 
• 
• 

If Karel starts at Row 1 and Column 1, facing East, where will Karel be, and what direction will Karel be facing after running the following code? (Assume the world is 10x10 in size)

• 1. Row 3, Column 1, Facing North

• 1. Row 1, Column 4, Facing North

• 1. Row 1, Column 3, Facing South

• 1. Row 1, Column 3, Facing North

Which of the following commands is a valid Karel command?

• move

• move;

• move();

• move()