Can't understand the output.

Question

This is a question in the js course.The correct answer is 16, but I can't understand how it's 16. It would be great if someone explained the solution.

What is the output of this code?

var sum=0;
for(i=4; i<8; i++) {
if (i == 6) {
continue;
}
sum += i;
}
document.write(sum);

Answer 1

i starts off as 4. since i != 6, we add 4 to our total, which is now 4.
i is 5. since i != 6, we add 5 to our total, which is now 9.
i is 6. since i == 6, we end the loop right here and jump back up.
i is 7. since i != 6, we add 7 to our total, which is now 16.
i is 8, and our loop stops.
We print 16 onto the screen.

Answer 2

var sum=0; This is used to intialize sum to 0

for(i=4; i<8; i++) {

if (i == 6) {
continue; This means that the the loop will skip the treatement when i=6
}

sum += i; This means that sum=sum+1 each time the loop is run

}

Now, we started with sum = 0 and i = 4

for i= 4 we will have sum = 4 by the end of the treatement
for i= 5, sum= 4+5 = 9
The loop won't sum for i=6 because we have the continue statement
for i= 7 we add 7 to the total which means sum = 9+7 = 16

document.write(sum); prints the result on the screen

Hope it helps !