​x
 
<!DOCTYPE html>
<html>
<body>
​
<p id="demo"></p>
​
<script>
x = 5; // Assign 5 to x
​
elem = document.getElementById("demo"); // Find an element 
elem.innerHTML = x;           // Display x in the element
​
var x; // Declare x
</script>
​
</body>
</html> 
​