html运行实例（jsck_date_weekday

代码示例：（标识：jsck_date_weekday_utc）

<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可根据 UTC 显示星期几。</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var d = new Date();
  var weekday = new Array(7);
  weekday[0] = "Sunday";
  weekday[1] = "Monday";
  weekday[2] = "Tuesday";
  weekday[3] = "Wednesday";
  weekday[4] = "Thursday";
  weekday[5] = "Friday";
  weekday[6] = "Saturday";

  var n = weekday[d.getUTCDay()];
  document.getElementById("demo").innerHTML = n;
}
</script>

<p><strong>Note:</strong> 0=Sunday, 1=Monday, etc.</p>

</body>
</html>