js loops

Question 1

What is the purpose of a loop?

Answer 1

To repeat code in a controlled way

Question 2

What is the purpose of a condition expression in a loop?

Answer 2

To have a condition where the loop ends

Question 3

What does “iteration” mean in the context of loops?

Answer 3

A single execution of the code inside the loop

Question 4

When does the condition expression of a while loop get evaluated?

Answer 4

Before the each iteration

Question 5

When does the initialization expression of a for loop get evaluated?

Answer 5

Before the condition expression and first iteration

Question 6

When does the condition expression of a for loop get evaluated?

Answer 6

Before each iteration

Question 7

When does the final expression of a for loop get evaluated?

Answer 7

In between iterations starting after the first iteration and before the second (if they exist)

Question 8

Besides a return statement, which exits its entire function block, which keyword exits a loop before its condition expression evaluates to false?

Answer 8

break

Question 9

What does the ++ increment operator do?

Answer 9

number++; // number = number + 1;

increments number by one

Question 10

How do you iterate through the keys of an object?

Answer 10

for…in loop

for (const x in object) { }