​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>设置毫秒后，单击按钮显示日期时间的毫秒。</p>
​
<button onclick="myFunction()">试一试</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var d = new Date();
  d.setMilliseconds(192);
  var n = d.getMilliseconds();
  document.getElementById("demo").innerHTML = n;
}
</script>
​
</body>
</html>
​