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<!-- Your HTML code here --> <html> <head> <style> /* Your CSS code here */ body { background-color: #f2f2f2; } h1 { color: red; } </style> </head> <body> <h1>Hello, CodeMirror!</h1> <script> // Your JavaScript code here var message = "Hello from JavaScript!"; console.log(message); // Generating an error intentionally undefinedFunction(); </script> </body> </html>
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