<!DOCTYPE html>
<html>
<body>
<p>A global function like myFunction() automatically becomes a window method.</p>
<p>myFunction() is the same as window.myFunction().</p>
<p id="demo"></p>
<script>
function myFunction(a, b) {
return a * b;
}
document.getElementById("demo").innerHTML = window.myFunction(10, 2);
</script>
</body>
</html>