如何缩短时区名称列表从那一刻.js

How to shorten the timezone name list got from moment.js?

本文关键字：那一刻 js 列表 何缩短 时区      更新时间：2023-09-26

我正在使用moment.js（我使用的方法是moment.tz.names()）来检索时区名称列表，该列表枚举了全球500多个城市。长列表使得用户选择所需时区的效率不是很高。问题是是否有办法减少列表的大小，这意味着将同一时区的城市偏移量分组在一起。

以下是Microsoft时区索引值，@stanleyxu2005在这里的另一个答案中提到。

{000, "Dateline Standard Time", "(GMT-12:00) International Date Line West"},
{001, "Samoa Standard Time", "(GMT-11:00) Midway Island, Samoa"},
{002, "Hawaiian Standard Time", "(GMT-10:00) Hawaii"},
{003, "Alaskan Standard Time", "(GMT-09:00) Alaska"},
{004, "Pacific Standard Time", "(GMT-08:00) Pacific Time (US and Canada); Tijuana"},
{010, "Mountain Standard Time", "(GMT-07:00) Mountain Time (US and Canada)"},
{013, "Mexico Standard Time 2", "(GMT-07:00) Chihuahua, La Paz, Mazatlan"},
{015, "U.S. Mountain Standard Time", "(GMT-07:00) Arizona"},
{020, "Central Standard Time", "(GMT-06:00) Central Time (US and Canada"},
{025, "Canada Central Standard Time", "(GMT-06:00) Saskatchewan"},
{030, "Mexico Standard Time", "(GMT-06:00) Guadalajara, Mexico City, Monterrey"},
{033, "Central America Standard Time", "(GMT-06:00) Central America"},
{035, "Eastern Standard Time", "(GMT-05:00) Eastern Time (US and Canada)"},
{040, "U.S. Eastern Standard Time", "(GMT-05:00) Indiana (East)"},
{045, "S.A. Pacific Standard Time", "(GMT-05:00) Bogota, Lima, Quito"},
{050, "Atlantic Standard Time", "(GMT-04:00) Atlantic Time (Canada)"},
{055, "S.A. Western Standard Time", "(GMT-04:00) Caracas, La Paz"},
{056, "Pacific S.A. Standard Time", "(GMT-04:00) Santiago"},
{060, "Newfoundland and Labrador Standard Time", "(GMT-03:30) Newfoundland and Labrador"},
{065, "E. South America Standard Time", "(GMT-03:00) Brasilia"},
{070, "S.A. Eastern Standard Time", "(GMT-03:00) Buenos Aires, Georgetown"},
{073, "Greenland Standard Time", "(GMT-03:00) Greenland"},
{075, "Mid-Atlantic Standard Time", "(GMT-02:00) Mid-Atlantic"},
{080, "Azores Standard Time", "(GMT-01:00) Azores"},
{083, "Cape Verde Standard Time", "(GMT-01:00) Cape Verde Islands"},
{085, "GMT Standard Time", "(GMT) Greenwich Mean Time: Dublin, Edinburgh, Lisbon, London"},
{090, "Greenwich Standard Time", "(GMT) Casablanca, Monrovia"},
{095, "Central Europe Standard Time", "(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague"},
{100, "Central European Standard Time", "(GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb"},
{105, "Romance Standard Time", "(GMT+01:00) Brussels, Copenhagen, Madrid, Paris"},
{110, "W. Europe Standard Time", "(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna"},
{113, "W. Central Africa Standard Time", "(GMT+01:00) West Central Africa"},
{115, "E. Europe Standard Time", "(GMT+02:00) Bucharest"},
{120, "Egypt Standard Time", "(GMT+02:00) Cairo"},
{125, "FLE Standard Time", "(GMT+02:00) Helsinki, Kiev, Riga, Sofia, Tallinn, Vilnius"},
{130, "GTB Standard Time", "(GMT+02:00) Athens, Istanbul, Minsk"},
{135, "Israel Standard Time", "(GMT+02:00) Jerusalem"},
{140, "South Africa Standard Time", "(GMT+02:00) Harare, Pretoria"},
{145, "Russian Standard Time", "(GMT+03:00) Moscow, St. Petersburg, Volgograd"},
{150, "Arab Standard Time", "(GMT+03:00) Kuwait, Riyadh"},
{155, "E. Africa Standard Time", "(GMT+03:00) Nairobi"},
{158, "Arabic Standard Time", "(GMT+03:00) Baghdad"},
{160, "Iran Standard Time", "(GMT+03:30) Tehran"},
{165, "Arabian Standard Time", "(GMT+04:00) Abu Dhabi, Muscat"},
{170, "Caucasus Standard Time", "(GMT+04:00) Baku, Tbilisi, Yerevan"},
{175, "Transitional Islamic State of Afghanistan Standard Time", "(GMT+04:30) Kabul"},
{180, "Ekaterinburg Standard Time", "(GMT+05:00) Ekaterinburg"},
{185, "West Asia Standard Time", "(GMT+05:00) Islamabad, Karachi, Tashkent"},
{190, "India Standard Time", "(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi"},
{193, "Nepal Standard Time", "(GMT+05:45) Kathmandu"},
{195, "Central Asia Standard Time", "(GMT+06:00) Astana, Dhaka"},
{200, "Sri Lanka Standard Time", "(GMT+06:00) Sri Jayawardenepura"},
{201, "N. Central Asia Standard Time", "(GMT+06:00) Almaty, Novosibirsk"},
{203, "Myanmar Standard Time", "(GMT+06:30) Yangon Rangoon"},
{205, "S.E. Asia Standard Time", "(GMT+07:00) Bangkok, Hanoi, Jakarta"},
{207, "North Asia Standard Time", "(GMT+07:00) Krasnoyarsk"},
{210, "China Standard Time", "(GMT+08:00) Beijing, Chongqing, Hong Kong SAR, Urumqi"},
{215, "Singapore Standard Time", "(GMT+08:00) Kuala Lumpur, Singapore"},
{220, "Taipei Standard Time", "(GMT+08:00) Taipei"},
{225, "W. Australia Standard Time", "(GMT+08:00) Perth"},
{227, "North Asia East Standard Time", "(GMT+08:00) Irkutsk, Ulaanbaatar"},
{230, "Korea Standard Time", "(GMT+09:00) Seoul"},
{235, "Tokyo Standard Time", "(GMT+09:00) Osaka, Sapporo, Tokyo"},
{240, "Yakutsk Standard Time", "(GMT+09:00) Yakutsk"},
{245, "A.U.S. Central Standard Time", "(GMT+09:30) Darwin"},
{250, "Cen. Australia Standard Time", "(GMT+09:30) Adelaide"},
{255, "A.U.S. Eastern Standard Time", "(GMT+10:00) Canberra, Melbourne, Sydney"},
{260, "E. Australia Standard Time", "(GMT+10:00) Brisbane"},
{265, "Tasmania Standard Time", "(GMT+10:00) Hobart"},
{270, "Vladivostok Standard Time", "(GMT+10:00) Vladivostok"},
{275, "West Pacific Standard Time", "(GMT+10:00) Guam, Port Moresby"},
{280, "Central Pacific Standard Time", "(GMT+11:00) Magadan, Solomon Islands, New Caledonia"},
{285, "Fiji Islands Standard Time", "(GMT+12:00) Fiji Islands, Kamchatka, Marshall Islands"},
{290, "New Zealand Standard Time", "(GMT+12:00) Auckland, Wellington"},
{300, "Tonga Standard Time", "(GMT+13:00) Nuku'alofa"}

这是问题 #227 中时刻时区的积压工作。

以下是我在那里提供的临时解决方法，它将列表缩短为 365 个区域标识符。

var names = Object.keys(moment.tz._zones)
    .map(function(k) { return moment.tz._zones[k].split('|')[0]; })
    .filter(function(z) { return z.indexOf('/') >= 0; })
    .sort();

这将从列表中删除链接和缩写区域。 我们认识到这仍然不理想，并将在未来的版本中对此进行改进。

我认为

这不是一个技术问题，而是一个设计问题。在下拉列表中显示500+城市不是好的UI设计。

以下是一些替代方法：

  1. 显示时区缩写，例如 ['CST', 'EST', ...]或['UTC', 'UTC+1', ...] .
  2. 维护简化的时区列表。对于每个时区，显示 2-3 个最著名的城市。请参考视窗的时区设置。

我希望这对您有所帮助。

如果其他人想要过滤掉已弃用的时区：

const deprecatedTimeZones = ["UCT", "PST8PDT", "GB", "MST7MDT", "EST5EDT", "W-SU", "CST6CDT", "HST", "MST", "Universal", "EET", "WET", "EST", "CET", "MET", "GMT", "Etc"];
const deprecatedTimeZonesRegex = `^${deprecatedTimeZones.join("|^")}`;
const allowedTimeZones = moment.tz.names()
    .filter(timezone => timezone.startsWith("A") || !new RegExp(deprecatedTimeZonesRegex).test(timezone))
    .sort((timezoneA, timezoneB) => timezoneA.localeCompare(timezoneB))
    .map(timezone => ({
        timezone,
    }));

在前端使用 react-select（或类似的东西）进行选择将使这很好。

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