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<!DOCTYPE html> <html> <body> <h2>JavaScript Functions</h2> <p>Variables created without a declaration keyword (var, let, or const) are always global, even if they are created inside a function.:</p> <p id="demo"></p> <script> myFunction(); document.getElementById("demo").innerHTML = a * a; function myFunction() { a = 4; } </script> </body> </html>
