​x
 
<!DOCTYPE html>
<html>
<body>
​
<h3>演示如何访问 DETAILS 元素</h3>
​
<details id="myDetails">
Some additional details...
</details>
​
<p>点击按钮来显示额外的细节。</p>
​
<button onclick="myFunction()">试一下</button>
​
<script>
function myFunction()
{
var x = document.getElementById("myDetails");
x.open=true;
}
</script>
​
</body>
</html>
​