FST Class 2023- Quiz 5

Which JavaScript loop is commonly used for iterating over a range of numbers?

• while loop

• do-while loop

• for loop

• for...in loop

In a for loop, what is the purpose of the first statement (e.g., `let i = 0`) inside the parentheses?

• It defines the loop condition.

• It specifies the loop increment.

• It initializes the loop variable.

• It defines the loop block.

How many expressions are separated by semicolons inside the parentheses of a for loop?

• 1

• 2

• 3

• 4

In a for loop, what does the condition determine?

• The loop variable's initial value

• The loop's termination condition

• The loop's increment value

• The loop's block of code

What is the key difference between a for loop and a while loop?

• A for loop must have an initialization statement

• A while loop has a built-in incrementer.

• A while loop doesn't require a condition

• A for loop doesn't have a loop variable.

In a while loop, when is the condition checked?

• Before executing the loop body

• After executing the loop body

• It's checked only once at the beginning

• It's checked both before and after the loop body

What happens if the condition of a while loop is initially false?

• The loop never executes.

• The loop executes indefinitely.

• The loop executes once.

• An error occurs.

In a do-while loop, when is the condition checked?

• Before executing the loop body

• After executing the loop body

• It's checked only once at the beginning

• It's checked both before and after the loop body

How does a do-while loop differ from a while loop?

• A do-while loop must have a condition.

• A do-while loop executes at least once.

• A do-while loop doesn't use a loop variable.

• A do-while loop doesn't support an exit condition.