如何从 bootstrap-datepicker 获取 UTC 时间戳？

Question

如何将 bootstrap-datepicker 设置为 return UTC 时间戳而不是基于用户时区的时间戳？

的 1.8.0 版

这是一个示例，当日期为 selected 时，returned 由 bootstrap-datepicker 显示时间戳：

HTML

<div class="container">
  <div class="row">
    <div class="col-sm-6">
      <div class="input-group date">
        <input type="text" class="form-control" id="js-date">
        <div class="input-group-addon">
          <span class="glyphicon glyphicon-th"></span>
        </div>
      </div>
    </div>
  </div>
  <div class="row">
    <span id="timestamp-output"></span>
  </div>
</div>

JavaScript

$(document).ready(function() {
  $('#js-date').datepicker();
});

$('#js-date').datepicker().on('changeDate', function (ev) {
  $('#timestamp-output').text(ev.date.getTime());
});

Fiddle 例子

bootstrap-datepicker example

输出

当您运行示例和select日期11/29/2018时，显示的时间戳为1543478400000，对应于：

GMT: Thursday, November 29, 2018 8:00:00 AM

我需要的是 return 时间戳 1543449600000，它对应于：

GMT: Thursday, November 29, 2018 12:00:00 AM

总结

bootstrap-datepicker 中是否有配置选项？或者也许是将 returned 本地化时间戳转换为 UTC 时间戳的可靠方法？

Answer 1

每个 this 文档调用：

getUTCDate()

也通过Javascript:

var date = new Date(ev.date.getTime() + (60000 * date.getTimezoneOffset()));

Answer 2

您可能想看看 Moment.js。 已更新 我将本地时间戳转换为 UTC 时间戳。

$(document).ready(function() {
  $('#js-date').datepicker();
});

$('#js-date').datepicker().on('changeDate', function (ev) {
  
  var datetime = new Date(ev.date.getTime());
  // Convert local timestamp to UTC timestamp
  var local = moment(datetime).valueOf();
  var utc = (moment(datetime).add(-(moment().utcOffset()), 'm'));
  utc = moment.parseZone(utc).utc().valueOf();
  
  $('#timestamp-local').text('Local Timestamp is ' + local);
  $('#timestamp-utc').text('UTC Timestamp is ' + utc);
  
  console.log('UTC Offset is ' + moment().utcOffset());
});

<script src="https://rawgit.com/moment/moment/2.22.2/min/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.8.0/js/bootstrap-datepicker.js"></script>

<div class="container">
  <div class="row">
    <div class="col-sm-6">
      <div class="input-group date">
        <input type="text" class="form-control" id="js-date">
        <div class="input-group-addon">
          <span class="glyphicon glyphicon-th"></span>
        </div>
      </div>
    </div>
  </div>
  <div class="row">
    <span id="timestamp-local"></span><br/>
    <span id="timestamp-utc"></span>
  </div>
</div>

如何从 bootstrap-datepicker 获取 UTC 时间戳？

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