我如何从字符串中获取时间和缩写的时区。我做错了什么？
const timestampString = 'Wed Dec 05 2018 22:00:00 GMT-0800 (Pacific Standard Time)';
const timezoneAbbreviation = moment.tz(timestampString).format('z'); // expecting PST, but result is UTC
答案 0 :(得分：0)
该功能为deprecated in moment，只能通过class User << ActiveRecord::Base
has_many :acknowledgements
end
class Event << ActiveRecord::Base
has_many :acknowledgements
has_many :tracks, through: event_track
end
class Acknowledgement << ActiveRecord::Base
belongs_to :user
belongs_to :event
end
class Track << ActiveRecord::Base
has_many :event_tracks
has_many :events, through: event_tracks
end
class EventTrack << ActiveRecord::Base
belongs_to :event
belongs_to :track
end
使用，如下所示：
moment-timezoneconst timestampString = 'Wed Dec 05 2018 22:00:00 GMT-0800 (Pacific Standard Time)';
const result = moment(new Date(timestampString)).tz('America/Los_Angeles').format('z')
console.log(result)
注意：您需要先使用有效日期实例化时刻，等等。
其背后的原因是，没有一种一致的方法可以尽可能read here的方式从本地Date对象<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.23/moment-timezone-with-data.min.js"></script>获得时区缩写。
答案 1 :(得分：0)
对于使用 date-fns-tz 的任何人，您可以找到以下时区缩写
const { utcToZonedTime, format } = require('date-fns-tz')
const date = new Date('2018-09-01T16:01:36.386Z')
const zonedDate = utcToZonedTime(date, 'America/Toronto')
const pattern = 'zzz'
const timeZoneAbbr = format(zonedDate, pattern, { timeZone: 'America/Toronto' })
-> timeZoneAbbr : EDT