​x
 
                                <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>享学课堂</title>
</head>
<body>
  <p id="demo"></p>
​
  <script>
    var x = 5; // Initialize x
    var y = 7; // Initialize y
​
    elem = document.getElementById("demo"); // Find an element
    elem.innerHTML = x + " " + y;           // Display x and y
​
  </script>
</body>
</html>
​