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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Basic JavaScript Example</title> </head> <body> <h1>Click the Button to Change Text</h1> <button onclick="changeText()">Click Me</button> <p id="demo">This is a paragraph.</p> <script> function changeText() { document.getElementById("demo").innerHTML = "Text has been changed!"; } </script> </body> </html>