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<html><head><script>function imgError() { alert('The image could not be loaded.');}</script></head><body><h1>JavaScript HTML Events</h1><h2>The onerror Attribute</h2><img src="image.gif" onerror="imgError()"><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></body></html>