javascript-loops

Question 1

What is the purpose of a loop?

Answer 1

Repeat a block of code automatically.

Question 2

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

Answer 2

It determines if and when the loop stops.

Question 3

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

Answer 3

Means how many times the loop will loop.

Question 4

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

Answer 4

Before each iteration.

Question 5

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

Answer 5

Once before the loop begins.

Question 6

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

Answer 6

Before each loop iteration.

Question 7

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

Answer 7

At the end of every loop iteration.

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

Adds one to the operand.

Question 10

How do you iterate through the keys of an object?

Answer 10

Using the for in statement.