<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JavaScript Incrementing and Decrementing Operators</title>
</head>
<body>
<script>
var x; // Declaring Variable
x = 10;
document.write(++x); // Prints: 11
document.write("<p>" + x + "</p>"); // Prints: 11
x = 10;
document.write(x++); // Prints: 10
document.write("<p>" + x + "</p>"); // Prints: 11
x = 10;
document.write(--x); // Prints: 9
document.write("<p>" + x + "</p>"); // Prints: 9
x = 10;
document.write(x--); // Prints: 10
document.write("<p>" + x + "</p>"); // Prints: 9
</script>
</body>
</html>