如何使用 java 脚本将 12 小时日期时间格式转换为 24 小时格式？

Question

我以 24 小时格式从我的数据库发送数据，但是当我在前端使用它作为时间计数器时，输出给出“无”。此外，当我打印“plan_deactive_date”时，它以 12 小时格式显示时间。那么，有没有办法将日期时间从 12 小时格式转换为 24 小时格式？

<script>

// Set the date we're counting down to

var countDownDate = new Date("{{plan_deactive_date}}").getTime();

// Update the count down every 1 second

var x = setInterval(function() {

  // Get today's date and time

  var now = new Date().getTime();

  // Find the distance between now and the count down date

  var distance = countDownDate - now;

  // Time calculations for days, hours, minutes and seconds

  var days = Math.floor(distance / (1000 * 60 * 60 * 24));

  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));

  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));

  var seconds = Math.floor((distance % (1000 * 60)) / 1000);

  // Display the result in the element with id="demo"

  document.getElementById("demo").innerHTML = days + "d " + hours + "h "

  + minutes + "m " + seconds + "s ";

  // If the count down is finished, write some text

  if (distance < 0) {

    clearInterval(x);

    document.getElementById("demo").innerHTML = "Expired";

  }

}, 1000);

</script>

Answer 1

您可以使用date.toLocaleDateString('en-GB')读这个：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

Answer 2

您可以使用以24小时格式获取日期data.toLocaleString('en-GB')以12小时格式获取日期data.toLocaleString('en')