​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>本例使用 HTML DOM 将 "onsubmit" 事件分配给 form 元素。</p>
​
<p>当您提交表单时，会触发提示文本的函数。</p>
​
<form id="myForm" action="/demo/html/action_page.php">
  Enter name: <input type="text" name="fname">
  <input type="submit" value="Submit">
</form>
​
<script>
document.getElementById("myForm").onsubmit = function() {myFunction()};
​
function myFunction() {
  alert("The form was submitted");
}
</script>
​
</body>
</html>
​