​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>本例演示如何将 "onerror" 事件分配给 img 元素。</p>
​
<img src="image.gif" onerror="myFunction()">
​
<p id="demo"></p>
​
<script>
function myFunction() {
  document.getElementById("demo").innerHTML = "The image could not be loaded.";
}
</script>
​
</body>
</html>
​