Javascript For Loops

Question 1

When is the first expression in the parentheses for a for loop (known as the initialization) evaluated?

Answer 1

It’s evaluated once before the loop begins.

Question 2

When is the second expression in the parentheses for a for loop (known as the condition) evaluated?

Answer 2

It’s evaluated before each loop iteration.

Question 3

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

Answer 3

Defines the condition for executing the code block.

Question 4

When is the third expression in the parentheses for a for loop (known as the final expression) evaluated?

Answer 4

It’s evaluated at the end of each loop iteration.

Question 5

What is the purpose of the final expression in a for loop?

Answer 5

Generally used to update or increment the counter variable.