i dont understant

Question

Fill in the blanks to print EVEN values from 0 to 20 using a for loop:
var x = 0;
for (; x <=
; x +=
) {
document.write(x);
}

Answer 1

for( ; x <= 20; x += 2 )
Explanation:
The loop begins with <x> being zero (an even number), it goes around while <x> is less than or equal to 20 (also an even number).
The loop increments <x> by two in each iteration to be sure that the value of incremented <x> will always be an even number.
Note:
+= operator works by adding the right hand operand (2) to the current value of the left hand operand (x).

Answer 2

Thanks a lot . I am new here i never seen += operator

Answer 3

No problem,
We all started knowing nothing 👌

Answer 4

👏👍