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<!DOCTYPE html> <html> <body> <h1>The Window Object</h1> <h2>The alert() Method</h2> <p>Click the button to display an alert box.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { alert("Hello! I am an alert box!"); } </script> </body> <!-- /jsref/tryit.asp?filename=tryjsref_alert </html>
