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<!DOCTYPE html> <html> <head> <title>Let's Coding Example</title> </head> <body> <div id="html-div"> </div> <script> <!DOCTYPE html> <html> <head> <title>External JavaScript</title> </head> <body> <h1>External JavaScript</h1> <button onclick="sayHello()">Click me</button> <!-- Include the external JavaScript file --> <script src="script.js"></script> </body> </html> </script> </body> </html>
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