​x
 
<!DOCTYPE html>
<html>
<body>
​
<p><del id="myDel" datetime="2023-02-09T00:19:30Z">这段文字已被删除。</del></p>
​
<p>单击该按钮可返回已删除文本的 datetime 属性的值。</p>
​
<button onclick="myFunction()">试一试</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var x = document.getElementById("myDel").dateTime;
  document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
</html>
​