​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>本例使用 HTML DOM 将 "onerror" 事件分配给 img 元素。</p>
​
<img id="myImg" src="image.gif">
​
<p id="demo"></p>
​
<script>
document.getElementById("myImg").onerror = function() {myFunction()};
​
function myFunction() {
  document.getElementById("demo").innerHTML = "The image could not be loaded.";
}
</script>
​
</body>
</html>
​