Loops: while and for

Question 1

what are the 5 loops?

Answer 1

for
for in
for of
do while
while

Question 2

write a blank while loop

Answer 2

while (condition){
//code
};

Question 3

f the loop body has a single statement, we can omit the ________.

Answer 3

curly braces

Question 4

write a blank do while loop

Answer 4

do {
// loop body
} while (condition);

Question 5

when to use a do while loop?

Answer 5

when you want the body of the loop to execute at least once regardless of the condition being truthy.

Question 6

the acronym I use for three conditions in a loop

Answer 6

VCI

variable
condition
increment

Question 7

We can force the exit at any time using the special ____.

Answer 7

break directive.

Question 8

The _______ directive is a “lighter version” of break. It doesn’t stop the whole loop. Instead, it stops the current iteration and forces the loop to start a new one (if the condition allows).

Answer 8

continue

Question 9

for (let i = 0; i < 10; i++) {
if (i % 2 == 0) continue;
alert(i);
}

//returns and why?

Answer 9

1, 3, 5, 7, 9

For even values of i, the continue directive stops executing the body and passes control to the next iteration of for (with the next number). So the alert is only called for odd values.

Question 10

for (let i = 0; i < 10; i++) {
if (i % 2 != 0) continue;
alert(i);
}

//returns and why?

Answer 10

0,2,4,6,8

For even values of i, the continue directive stops executing the body and passes control to the next iteration of for (with the next number). So the alert is only called for even values.