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<!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>