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<!DOCTYPE html> <html> <body> <p>A function can access variables defined inside the function:</p> <button type="button" onclick="myFunction()">Click Me!</button> <p id="demo"></p> <script> function myFunction() { var a = 4; document.getElementById("demo").innerHTML = a * a; } </script> </body> <!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_function_scope2 by HTTrack Website Copier/3.x [XR&CO'2014], Fri, 23 Jan 2015 07:36:23 GMT --> </html>
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