Using ; after for loop changes the output, why?

Question

var x=1;
for(var i=0; i<6; i++);
{
x+=i;
}
console.log(x);
Output: 7
Otherwise the output is 16

Answer 1

Because when you use semicolon the content in the curly brackets is skipped => the loop runs, when i becomes 6 then the loop ends. The value of i which is printed is 6 + 1 = 7.

Answer 2

Cause x+=i Is not part of for loop

Answer 3

var x=1;
for(var i=0;i<6;i++);//here ends for loop last value of i is 6
x+=i;//x+=6. x=7