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<!DOCTYPE html> <html> <body> <img src="image.gif" onerror="myFunction()"> <p>A function is triggered if an error occurs when loading the image. The function shows an alert box with a text. In this example we refer to an image that does not exist, therefore the onerror event occurs.</p> <script> function myFunction() { alert('The image could not be loaded.'); } </script> </body> </html>
