Moment.js 关于流星，时区问题

Question

我一直在试图找出 moment-timezone.js 的问题。我似乎无法将时间戳从 UTC 转换为 PST

我使用的辅助函数是 timeInTimeZone。请原谅糟糕的变量名。

非常感谢任何调试问题的帮助

Template.home.helpers({
  timezone: function() {
    return Template.instance().timezone.get();
  },
  timeInTimeZone : function(){
    let time   = moment( this.createdAt ),
        format = 'dddd, MMMM Do YYYY h:mm a';

    var timezone = Template.instance().timezone.get();
    console.log(time.format( format )); //works
    console.log(timezone); //works

    var editedTime = time.tz( timezone ).format( format ); //breaks
    console.log(editedTime);
    return editedTime;

  }
});

我使用这个得到的日志如下：

Saturday, February 17th 2018 1:11 am home.js:141:5 America/Vancouver home.js:142:5 Exception in template helper: timeInTimeZone@http://localhost:3000/app/client/views/pages/home.js?hash=f7d8b7711106080a4d6fbb1d2089cf344f59223d:143:22 bindDataContext/<@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:3051:14 Blaze._wrapCatchingExceptions/<@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:1715:14 wrapHelper/http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:3103:14 Template._withTemplateInstanceFunc@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:3744:12 wrapHelper/<@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:3102:12 Spacebars.call@http://localhost:3000/packages/spacebars.js?hash=547cf8e466d1d52603d19bd5f48fb5df184fd237:172:12 Spacebars.mustacheImpl@http://localhost:3000/packages/spacebars.js?hash=547cf8e466d1d52603d19bd5f48fb5df184fd237:106:10 Spacebars.mustache@http://localhost:3000/packages/spacebars.js?hash=547cf8e466d1d52603d19bd5f48fb5df184fd237:110:16 Template.homehttp://localhost:3000/app/client/views/pages/template.home.js?hash=be956f7036145947c4a904d9c42627576e740dd1:82:14 doRender@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:2086:20 viewAutorun/http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:1934:18 Template._withTemplateInstanceFunc@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:3744:12 viewAutorun/<@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:1932:14 Blaze._withCurrentView@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:2271:12 viewAutorun@http://localhost:3000/packages/blaze.js?hash=a1ff2d6d5ecd59ee11e2ba260b8650a9d1140f59:1931:12 Tracker.Computation.prototype._compute@http://localhost:3000/packages/tracker.js?hash=0e8b5c18d543a28ce43b2f183c26b49ee62196af:339:5 Tracker.Computation.prototype._recompute@http://localhost:3000/packages/tracker.js?hash=0e8b5c18d543a28ce43b2f183c26b49ee62196af:358:9 Tracker._runFlush@http://localhost:3000/packages/tracker.js?hash=0e8b5c18d543a28ce43b2f183c26b49ee62196af:532:9 onGlobalMessage@http://localhost:3000/packages/meteor.js?hash=b0f12795c8cc1423b5850502871996903f947ed5:448:11

我尝试使用 meteor npm 和 meteor add

重新安装 moment 和 momnet-timezone

我知道它与 time.tz() 有关，传递给它的是以下 America/Vancouver

Answer 1

我不确定这里的问题是什么，但您可以尝试创建时区时刻的替代方法。使用函数 moment.tz，您可以传递日期和时区。

(function() {
  /* ignore */
  this.createdAt = moment();
  const Template = {
    instance: () => ({
      timezone: { get: () => 'America/Vancouver' }
    })
  }
  /* end */

  let timezone = Template.instance().timezone.get();
  let time = moment.tz(this.createdAt, timezone);
  let format = 'dddd, MMMM Do YYYY h:mm a';
  
  var editedTime = time.format(format);
  console.log(editedTime);
  return editedTime;
})();

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.20.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.14/moment-timezone-with-data.min.js"></script>

Answer 2

虽然我找不到 .tz() 函数的合适解决方案，但我正在仔细研究文档

我最终使用了这段代码

timeInTimeZone : function(){
    var date = moment.utc(this.createdAt); //take the date in UTC format
    return date.local().format("ddd, MMM D YYYY h:mma"); //Return the date in user's local time
}

Moment.js 关于流星，时区问题

Moment.js on meteor, Problems with Timezone

javascript

node.js

meteor

momentjs