​x
 
<!DOCTYPE html>
<html>
<body>
​
<a id="myAnchor" href="https://wwww.w3school.com.cn/">访问 W3School.com.cn</a>
​
<p>preventDefault() 方法将阻止上面的链接跟随 URL。</p>
​
<p>请单击链接并检查是否阻止了默认操作。</p>
​
<script>
document.getElementById("myAnchor").addEventListener("click", function(event){
  event.preventDefault()
  alert("Was preventDefault() called: " + event.defaultPrevented);
});
</script>
​
</body>
</html>
​