​x
 
<!DOCTYPE html>
<html>
<head>
    <title>Global Variables Example</title>
</head>
<body>
    <script>
        // Declaring global variables
        var globalVar1 = 'I am a global variable';
        let globalVar2 = 'I am another global variable';
        const PI = 3.14;  // Global constant
​
        // Accessing global variables
        console.log(globalVar1);  // Output: I am a global variable
        console.log(globalVar2);  // Output: I am another global variable
        console.log(PI);          // Output: 3.14
​
        // Modifying global variables
        globalVar1 = 'Updated global variable';
        console.log(globalVar1);  // Output: Updated global variable
    </script>
</body>
</html>