open_in_new content_copy 
<!DOCTYPE html>
<html>
<head>
    <title>Hello World Program</title>
</head>
<body>

<script>
    // Using console.log()
    console.log("Hello World");

    // Using document.write()
    document.write("Hello World");

    // Using alert()
    alert("Hello World");
</script>

</body>
</html>