finding even odd number in javascript code example

Example 1: check if even or odd javascript

function evenOrOdd(num) { //for string length take string
  if (num % 2 == 0) {//and replace numm with string.length here
    return "even";
  } else {
    return "odd";
  }
}

Example 2: number is even or odd fucntion in javascript

<!DOCTYPE html>
<html>
<body>
<script>
   var num = 5;
   document.write("Number = "+num+"<br>");
   if(num % 2 == 0) {
      document.write('Number is even!');
   } else {
      document.write('Number is odd!');
   }
</script>
</body>
</html>