var x = 0;
for (var i = 0; i < 10; i++) {
  x = x + 1;
  if (x%2 == 0) { // % is modulus operator
    alert('X is even');
  } else {
    alert('X is odd');
  }
}
alert('cerberus ' + x);

var x = 0; 			// start x with the value 0
for (var i = 0; i < 10; i++) {  // make a loop and do the stuff in {}.
				// start with the first thing;
				// while second thing is true;
				// do 3rd thing each time through the loop
				// i is just used to count the times we go through the loop
				// i is 0 at the beginning of the loop and we continue looping
				// while it is true that it is less than 10.
				// each time, increment i
  x = x + 1;			// make x the previous value of x plus 1 (same as if we said x++)