<!DOCTYPE html>
<html>
<body>
<p>This example uses the addEventListener() method to attach a "error" event to an img element.</p>
<img id="myImg" src="image.gif">
<p id="demo"></p>
<script>
document.getElementById("myImg").addEventListener("error", myFunction);
function myFunction() {
document.getElementById("demo").innerHTML = "The image could not be loaded.";
}
</script>
</body>
</html>