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<!DOCTYPE html> <html> <body> <h1>Demo: Global & local variable with same name</h1> <p id="p1"></p> <p id="p2"></p> <script> var userName = "Bill"; function ShowUserName() { var userName = "Steve"; document.getElementById("p1").innerHTML = userName; // "Steve" } ShowUserName(); document.getElementById("p2").innerHTML = userName; // Bill </script> </body> </html>
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