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<!DOCTYPE html>
<html>
<body>
​
<p>单击按钮可显示设置 UTC 毫秒后的日期时间的 UTC 毫秒。</p>
​
<button onclick="myFunction()">试一试</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var d = new Date();
  d.setUTCMilliseconds(192);
  var n = d.getUTCMilliseconds();
  document.getElementById("demo").innerHTML = n;
}
</script>
​
</body>
</html>
​