Why the result is 16?

Question

I'm learning slowly this JS language, but I cannot understand why this one:

------------------------------------------------------------------
//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);
------------------------------------------------------------------

gives as result 16. I've tried to understand by taking out some of the sections, but still I don't get it.

I appreciate all help!

Have an amazing day :)

Answer 1

Hello M. Cristian

sum = 0
i = 4

sum += i is shortcut for sum = sum + i
sum = 0 + 4 = 4

sum = 4
i = 5
sum += 5 = 9

sum = 9
i = 6 -> continue

sum = 9
i = 7
sum += 7 = 16

i = 8 -> end loop

output: 16

about break and continue:
https://www.sololearn.com/learn/JavaScript/1143/?ref=app

Answer 2

Output:4+5+7=16