代码示例:(标识:jsck_setmilliseconds)
<!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>
运行结果: