{"id":9077,"date":"2021-05-17T07:00:12","date_gmt":"2021-05-16T22:00:12","guid":{"rendered":"https:\/\/blog.capilano-fw.com\/?p=9077"},"modified":"2021-05-03T19:05:36","modified_gmt":"2021-05-03T10:05:36","slug":"%e3%80%90javascript%e3%80%91luxon-%e3%81%a7%e6%97%a5%e4%bb%98%e3%81%ae%e6%93%8d%e4%bd%9c%e3%83%bb%e5%85%a8%e5%ae%9f%e4%be%8b38%e4%bb%b6%ef%bc%81","status":"publish","type":"post","link":"https:\/\/blog.capilano-fw.com\/?p=9077","title":{"rendered":"\u3010JavaScript\u3011Luxon \u3067\u65e5\u4ed8\u306e\u64cd\u4f5c\u30fb\u5168\u5b9f\u4f8b38\u4ef6\uff01"},"content":{"rendered":"

\u3055\u3066\u3055\u3066\u3001\u3053\u306e\u9593Twitter<\/code>\u3092\u307c\u3093\u3084\u308a\u773a\u3081\u3066\u3044\u308b\u3068\u3001\u3069\u3093\u3076\u30e9\u30c3\u30b3\u3055\u3093\u306e\u30c4\u30a4\u30fc\u30c8<\/a>\u304c\u76ee\u306b\u5165\u308a\u3001\u885d\u6483\u3092\u53d7\u3051\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u305d\u308c\u306f\u30fb\u30fb\u30fb\u30fb\u30fb\u30fb<\/p>\n

Moment.js \u306f\u3059\u3067\u306b\u975e\u63a8\u5968\u3067\u3059\ud83d\ude2d<\/strong><\/p>\n

\u3068\u3044\u3046\u4e8b\u5b9f\u3067\u3059\u3002<\/p>\n

\u5b9f\u969b Moment.js \u516c\u5f0f\u306e\u30a2\u30ca\u30a6\u30f3\u30b9<\/a>\u00a0\u3067\u3082\u3053\u306e\u3053\u3068\u304c\u8a00\u53ca\u3055\u308c\u3066\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a00\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\uff08\u8d85\u8981\u7d04\uff09<\/strong><\/p>\n

Moment.js \u306f\u53e4\u3044\u6642\u4ee3\u306e JavaScript \u3060\u304b\u3089\u3001\u65b0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304b\u3089\u306f\u4ee3\u66ff\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u3063\u305f\u307b\u3046\u304c\u3044\u3044\u304b\u3082\u306d\u3002<\/strong><\/pre>\n
\u305d\u3057\u3066\u3001\u305d\u306e\u300c\u4ee3\u66ff\u30d1\u30c3\u30b1\u30fc\u30b8<\/strong>\u300d\u3068\u3057\u3066\u4e00\u756a\u6700\u521d\u306b\u767b\u5834\u3059\u308b\u306e\u304c\u6b63\u5f0f\u306a\u5f8c\u7d99\u30d1\u30c3\u30b1\u30fc\u30b8\u00a0Luxon<\/a><\/strong>\uff08\u300c\u3089\u304f\u305d\u3093\u300d\u3068\u8aad\u3080\u3088\u3046\u3067\u3059\uff09 \u3067\u3057\u305f\u3002\uff082021.04.29 \u73fe\u5728\uff09<\/p>\n
\u305d\u3053\u3067\u2757<\/p>\n
\u4eca\u56de\u306f\u3053\u306eLuxon<\/code>\u3067\u65e5\u6642\u3092\u64cd\u4f5c\u3059\u308b\u305f\u3081\u300c\u5b9f\u4f8b\u8a18\u4e8b\u300d\u3092\u66f8\u3044\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n
\u305c\u3072\u7686\u3055\u3093\u306e\u304a\u5f79\u306b\u7acb\u3066\u307e\u3057\u305f\u3089\u5b09\u3057\u3044\u3067\u3059\ud83d\ude0a\u2728<\/p>\n
\"\"\u300c\u8aad\u307f\u65b9\u304c\u5206\u304b\u3089\u306a\u3044\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001
\nYouTube<\/code>\u3067\u30c1\u30a7\u30c3\u30af\u3057\u3066\u307e\u3059\u300d<\/p>\n
\u958b\u767a\u74b0\u5883\uff1a<\/strong> Luxon 1.26.0<\/p>\n
\u65e5\u4ed8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3059\u308b<\/h1>\n
Luxon<\/code>\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4f7f\u3044\u52dd\u624b\u304c\u3088\u3055\u305d\u3046\u306a\u9806\u3067\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n
\u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u9593\u3067\u53d6\u5f97<\/h2>\n
\u4e00\u756a\u30b7\u30f3\u30d7\u30eb\u306a\u53d6\u5f97\u65b9\u6cd5\u3067\u3001\u300c\u305f\u3063\u305f\u4eca<\/strong>\u300d\u306e\u6642\u523b\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n
const dt = luxon.DateTime.now();<\/strong><\/pre>\n
DB\u5f62\u5f0f\u304b\u3089\u53d6\u5f97\uff08\u4f8b\uff1a 2021-01-02 03:04:05\uff09<\/h2>\n
MySQL\u306a\u3069\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u65e5\u4ed8\u30c7\u30fc\u30bf\u3092\u5143\u306b\u3059\u308b\u5834\u5408\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('2000-01-02 03:04:05');<\/strong><\/pre>\n
\u306a\u304a\u3001\u65e5\u4ed8\u306e\u307f\u3067\u3082OK\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('2021-01-02');<\/strong><\/pre>\n
\u3061\u306a\u307f\u306bLaravel<\/code>\u3068\u306e\u9023\u643a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3059\u308b\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('{{ $item->created_at }}'<\/strong>);\r\n\r\n\/\/ \u3082\u3057\u304f\u306f\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\u306e\u5834\u5408\r\n\r\nconst dt = luxon.DateTime.fromSQL('{{ now() }}'<\/strong>);<\/pre>\n
\u203b \u305d\u306e\u4ed6\u3001\u30df\u30ea\u79d2\u4ed8\u304d\u3067\u3082OK\u306a\u3069\u3044\u308d\u3044\u308d\u306a\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4e00\u756a\u99b4\u67d3\u307f\u306e\u3042\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u300c\u8ff7\u3063\u305f\u3089 fromSQL() \u3092\u4f7f\u3063\u3066\u307f\u308b<\/strong>\u300d\u3068\u3044\u3046\u6d41\u308c\u3067\u3082\u3044\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u53d6\u5f97\uff08\u4f8b\uff1a { year: 2000 … }\uff09<\/h2>\n
\u5e74\u30fb\u6708\u30fb\u65e5 \u306a\u3069\u306e\u30c7\u30fc\u30bf\u3092\u30bb\u30c3\u30c8\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromObject({<\/strong>\r\n    year: 2000,<\/strong>\r\n    month: 1,<\/strong>\r\n    day: 2<\/strong>\r\n});<\/strong><\/pre>\n
\u306a\u304a\u3001\u5e74\u30fb\u6708\u30fb\u65e5 \u304c\u5168\u3066\u63c3\u3063\u3066\u3044\u308b\u5fc5\u8981\u306f\u306a\u304f\u3001\u4ee5\u4e0b\u306e\u5834\u5408\u306f\u300c2000\/1\/1 00:00:00<\/strong>\u300d\u3068\u3057\u3066\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromObject({ <\/strong>\r\n    year: 2000<\/strong>\r\n});<\/strong><\/pre>\n
\u307e\u305f\u3001\u4ee5\u4e0b\u306f\u300c\u4eca\u65e5\u306e1\u66422\u52063\u79d2\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromObject({<\/strong>\r\n    hour: 1,<\/strong>\r\n    minute: 2,<\/strong>\r\n    second: 3<\/strong>\r\n});<\/strong><\/pre>\n
\u6307\u5b9a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304b\u3089\u53d6\u5f97<\/h2>\n
\u65e5\u4ed8\u5f62\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
\u4f8b\u3048\u3070\u3001\u300c2000\u5e74\u30011\u6708\u3002\u65e5\u4ed8\u306f2\u65e5<\/strong>\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u304b\u3089\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u65e5\u4ed8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
const text = '2000\u5e74\u30011\u6708\u3002\u65e5\u4ed8\u306f2\u65e5';\r\nconst dt = luxon.DateTime.fromFormat(text, 'yyyy\u5e74\u3001M\u6708\u3002\u65e5\u4ed8\u306fd\u65e5');<\/strong><\/pre>\n
JavaScript \u306e\u65e5\u4ed8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u53d6\u5f97<\/h2>\n
JavaScript<\/code>\u3067\u4f7f\u3048\u308b\u30ce\u30fc\u30de\u30eb\u306a\u65e5\u4ed8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u3046\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromJSDate(new Date());<\/strong><\/pre>\n
\u306a\u304a\u3001\u3053\u308c\u306f\u4ee5\u4e0b\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
const dt = luxon.DateTime.now();<\/strong><\/pre>\n
\u8a00\u8a9e\u8a2d\u5b9a\u3092\u3059\u308b<\/h1>\n
\u5168\u4f53\u7684\u306b\u8a00\u8a9e\u8a2d\u5b9a\u3092\u3059\u308b\u5834\u5408\u306f\u3001luxon<\/code>\u3092\u5229\u7528\u3059\u308b\u524d\u306b\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u30bb\u30c3\u30c8\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
luxon.Settings.defaultLocale = 'ja';<\/strong><\/pre>\n
\u307e\u305f\u3001\u500b\u5225\u306b\u30ed\u30b1\u30fc\u30eb\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306bsetLocale()<\/code>\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
dt.setLocale('ja')<\/strong>.toFormat('EEE');<\/pre>\n
\u65e5\u4ed8\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b<\/h1>\n
\u5e74\u3092\uff14\u6841\u3067\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2021\uff09<\/h2>\n
const year = dt.year;<\/strong><\/pre>\n
\u6708\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 4\uff09<\/h2>\n
const month = dt.month;<\/strong><\/pre>\n
\u65e5\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 30\uff09<\/h2>\n
const day = dt.day;<\/strong><\/pre>\n
\u6642\u9593\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a15\uff09<\/h2>\n
const hour = dt.hour;<\/strong><\/pre>\n
\u3082\u3057\u300112\u6642\u9593\u5358\u4f4d\u3067\u53d6\u5f97\u3059\u308b\u5834\u5408\u306ftoFormat()<\/code>\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
const hour = dt.toFormat('h');<\/strong><\/pre>\n
\u5206\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 51\uff09<\/h2>\n
const minute = dt.minute<\/strong>;<\/pre>\n
\u79d2\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 38\uff09<\/h2>\n
const second = dt.second;<\/strong><\/pre>\n
\u30df\u30ea\u79d2\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 345\uff09<\/h2>\n
const millisecond = dt.millisecond<\/strong><\/pre>\n
\u66dc\u65e5\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a \u6c34 or \u6c34\u66dc\u65e5\uff09<\/h2>\n
luxon.Settings.defaultLocale = 'ja'; \/\/ \u8a00\u8a9e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\r\n\r\nconst dayOfWeek = dt.weekdayShort;<\/strong> \/\/ \u6c34<\/pre>\n
\u3082\u3057\u304f\u306f\u66dc\u65e5\u3092\u7701\u7565\u3057\u306a\u3044\u5834\u5408\u3067\u3059\u3002<\/p>\n
luxon.Settings.defaultLocale = 'ja'; \/\/ \u8a00\u8a9e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\r\n\r\nconst dayOfWeek = dt.weekdayLong;<\/strong> \/\/ \u6c34\u66dc\u65e5<\/pre>\n
Unix\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 946749845\uff09<\/h2>\n
const timestamp = dt.toSeconds();<\/strong><\/pre>\n
\u306a\u304a\u3001\u30df\u30ea\u79d2\u306e\u5834\u5408\u306f\u3053\u3061\u3089\u3002<\/p>\n
const timestamp = dt.toMillis();<\/strong><\/pre>\n
\u65e5\u672c\u5411\u3051\u306e\u65e5\u4ed8\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2021\/1\/2\uff09<\/h2>\n
const date = dt.toLocaleString();<\/strong><\/pre>\n
\u65e5\u672c\u8a9e\u8868\u8a18\u306e\u65e5\u4ed8\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2021\u5e741\u67082\u65e5\uff09<\/h2>\n
const date = dt.toLocaleString(luxon.DateTime.DATE_FULL);<\/strong><\/pre>\n
\u66dc\u65e5\u3064\u304d\u306e\u65e5\u4ed8\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2000\u5e741\u67082\u65e5(\u65e5)\uff09<\/h2>\n
const date = dt.toLocaleString(luxon.DateTime.DATE_MED_WITH_WEEKDAY);<\/strong><\/pre>\n
\u66dc\u65e5\u3064\u304d\u306e\u65e5\u4ed8\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2000\u5e741\u67082\u65e5\u65e5\u66dc\u65e5\uff09<\/h2>\n
const date = dt.toLocaleString(luxon.DateTime.DATE_HUGE);<\/strong><\/pre>\n
\u65e5\u672c\u5411\u3051\u306e\u6642\u523b\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 3:04\uff09<\/h2>\n
const time = dt.toLocaleString(luxon.DateTime.TIME_SIMPLE);<\/strong><\/pre>\n
\u65e5\u672c\u5411\u3051\u306e\u65e5\u6642\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a 2000\/1\/2 3:04\uff09<\/h2>\n
const time = dt.toLocaleString(luxon.DateTime.DATETIME_SHORT);<\/strong><\/pre>\n
\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3092\u53d6\u5f97\u3059\u308b\uff08\u4f8b\uff1a Asia\/Tokyo\uff09<\/h2>\n
const timezone = dt.zoneName;<\/strong><\/pre>\n
\u6307\u5b9a\u3057\u305f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u65e5\u6642\u3092\u53d6\u5f97\uff08\u4f8b\uff1a 2000.01.02\uff09<\/h2>\n
const date = dt.toFormat('yyyy.MM.dd');<\/strong><\/pre>\n
\u306a\u304a\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u4f7f\u308f\u308c\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u4ee5\u4e0b\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\ud83d\udcdd \u53c2\u8003URL\uff1a<\/strong>\u00a0https:\/\/moment.github.io\/luxon\/docs\/manual\/formatting.html#table-of-tokens<\/a><\/p>\n
\u65e5\u6570\u3092\u53d6\u5f97\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u3001\u300c\u4eca\u6708\u306f\u4f55\u65e5\u3042\u308b\u306e\uff1f\u300d\u304c\u77e5\u308a\u305f\u3044\u5834\u5408\u3067\u3059\u3002<\/p>\n
const days = dt.daysInMonth;<\/strong><\/pre>\n
\u307e\u305f\u3001\u5e74\u9593\u306e\u5834\u5408\u306f\u3053\u3061\u3089\u3002<\/p>\n
const days = dt.daysInYear;<\/strong><\/pre>\n
\u203b\u3046\u308b\u3046\u5e74\u306e\u5834\u5408\u306f366\u65e5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u66dc\u65e5\u3092\u5168\u3066\u53d6\u5f97\u3059\u308b<\/h2>\n
\u6708\u301c\u65e5\u307e\u3067\u306e\u30c7\u30fc\u30bf\u3092\u5168\u3066\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const weekdays = luxon.Info.weekdays();<\/strong>\r\n\r\n\/\/ \ud83d\udc49\u3053\u308c\u306f [\"\u6708\u66dc\u65e5\", \"\u706b\u66dc\u65e5\", \"\u6c34\u66dc\u65e5\", \"\u6728\u66dc\u65e5\", \"\u91d1\u66dc\u65e5\", \"\u571f\u66dc\u65e5\", \"\u65e5\u66dc\u65e5\"]<\/pre>\n
\u3082\u3057\u7701\u7565\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u66dc\u65e5\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306fshort<\/code>\u3092\u3064\u3051\u307e\u3059\u3002<\/p>\n
const weekdays = luxon.Info.weekdays('short');\r\n\r\n<\/strong>\/\/ \ud83d\udc49 \u3053\u308c\u306f\u3001[\"\u6708\", \"\u706b\", \"\u6c34\", \"\u6728\", \"\u91d1\", \"\u571f\", \"\u65e5\"]<\/pre>\n
\u65e5\u4ed8\u3092\u64cd\u4f5c\u3059\u308b<\/h1>\n
\u65e5\u6642\u3092\u9032\u3081\u308b\uff08\u4f8b\uff1a 2000\/1\/2 \u2192 2000\/1\/5\uff09<\/h2>\n
const newDt = dt.plus({ days: 3 }); \/\/ \uff13\u65e5\u9032\u3081\u308b<\/strong><\/pre>\n
\u3082\u3061\u308d\u3093\u3001days<\/code>\u3060\u3051\u3067\u306a\u304f\u305d\u306e\u4ed6\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3082\u4f7f\u3048\u307e\u3059\u3002<\/p>\n
const newDt = dt.plus({<\/strong>\r\n    hours: 3,   \/\/ 3\u6642\u9593\u9032\u3081\u308b<\/strong>\r\n    minutes: 4  \/\/ 4\u5206\u9032\u3081\u308b<\/strong>\r\n})<\/strong>;<\/pre>\n
\u65e5\u6642\u3092\u623b\u3059<\/h2>\n
\u3053\u3061\u3089\u3082\u300c\u65e5\u6642\u3092\u9032\u3081\u308b\u300d\u3068\u540c\u3058\u304fminus()<\/code>\u3092\u4f7f\u3046\u3053\u3068\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n
const newDt = dt.minus({<\/strong>\r\n    days: 2,<\/strong>\r\n    hours: 3,   \/\/ 3\u6642\u9593\u9032\u3081\u308b<\/strong>\r\n    minutes: 4  \/\/ 4\u5206\u9032\u3081\u308b<\/strong>\r\n})<\/strong>;<\/pre>\n
\u6307\u5b9a\u3057\u305f\u65e5\u6642\u3078\u79fb\u52d5\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u3001\u300c2000\/1\/2 03:04:05\u300d\u304b\u3089\u300c2001\/2\/3 04:05:06\u300d\u306b\u79fb\u52d5\u3059\u308b\u5834\u5408\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('2000-01-02 03:04:05');\r\nconst newDt = dt.set({<\/strong>\r\n    year: 2001,<\/strong>\r\n    month: 2,<\/strong>\r\n    day: 3,<\/strong>\r\n    hour: 4,<\/strong>\r\n    minute: 5,<\/strong>\r\n    second: 6<\/strong>\r\n});<\/strong><\/pre>\n
\u3082\u3061\u308d\u3093\u3001\u5168\u3066\u306e\u9805\u76ee\u3092\u30bb\u30c3\u30c8\u3059\u308b\u5fc5\u8981\u306f\u306a\u304f\u3001\u300c\u5e74\u3060\u3051\u300d\u3068\u304b\u300c\u6708\u3068\u65e5\u3060\u3051\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u5e74\u30fb\u6708\u30fb\u65e5\u306a\u3069\u306e\u958b\u59cb\u4f4d\u7f6e\u3078\u79fb\u52d5<\/h2>\n
\u3042\u308b\u958b\u59cb\u5730\u70b9\u3078\u79fb\u52d5\u3059\u308b\u306b\u306fstartOf()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u3001\u73fe\u5728\u304c\u300c2000\/5\/3 03:04:05<\/strong>\u300d\u3068\u3057\u3066\u3001\u6708\u306e\u59cb\u3081\u306b\u79fb\u52d5\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
const newDt = dt.startOf('month'); \/\/ 2000-05-01 00:00:00<\/strong><\/pre>\n
\u3082\u3061\u308d\u3093\u3001month<\/code> \u3060\u3051\u3067\u306a\u304fyear<\/code>\u3084day<\/code>\u3001hour<\/code>\u306a\u3069\u3067\u3082\u3064\u304b\u3048\u307e\u3059\u3002<\/p>\n
\u5e74\u30fb\u6708\u30fb\u65e5\u306a\u3069\u306e\u7d42\u4e86\u4f4d\u7f6e\u3078\u79fb\u52d5<\/h2>\n
\u3042\u308b\u7d42\u4e86\u5730\u70b9\u3078\u79fb\u52d5\u3059\u308b\u306b\u306fendOf()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u3001\u73fe\u5728\u304c\u300c2000\/5\/3 03:04:05<\/strong>\u300d\u3068\u3057\u3066\u3001\u6708\u306e\u7d42\u308f\u308a\u306b\u79fb\u52d5\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
const newDt = dt.endOf('month'); \/\/ 2000-05-31 23:59:59<\/strong><\/pre>\n
\u3082\u3061\u308d\u3093\u3001month<\/code> \u3060\u3051\u3067\u306a\u304fyear<\/code>\u3084day<\/code>\u3001hour<\/code>\u306a\u3069\u3082\u3064\u304b\u3048\u307e\u3059\u3002<\/p>\n
\u65e5\u4ed8\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h1>\n
\u65e5\u4ed8\u3068\u3057\u3066\u6b63\u3057\u3044\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u3001\u300c2000-02-31<\/strong>\u300d\u306f\u3042\u308a\u3048\u306a\u3044\u65e5\u4ed8\u3067\u3059\u304c\u3001\u3053\u3046\u3044\u3063\u305f\u3082\u306e\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('2000-02-31'); \/\/ \ud83d\udc48 \u3042\u308a\u3048\u306a\u3044\u65e5\u4ed8\r\n\r\nif(!dt.isValid) {<\/strong>\r\n\r\n    console.log('\u65e5\u4ed8\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\uff01');\r\n\r\n}<\/strong><\/pre>\n
\u3046\u308b\u3046\u5e74\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u30012000\u5e74\u306f\u3046\u308b\u3046\u5e74\u306e\u305f\u3081366\u65e5\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u3046\u3044\u3063\u305f\u3082\u306e\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const dt = luxon.DateTime.fromSQL('2000-01-01'); \/\/ \ud83d\udc48 2000\u5e74\u306f\u3001\u3046\u308b\u3046\u5e74\u3067\u3059\r\n\r\nif(dt.isInLeapYear) {<\/strong>\r\n\r\n    console.log('\u3046\u308b\u3046\u5e74\u3067\u3059\uff01');\r\n\r\n}<\/strong><\/pre>\n
\u540c\u3058\u300c\u5e74\u300d\u3084\u300c\u6708\u300d\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u3001\uff12\u3064\u306e\u65e5\u6642\u304c\u540c\u3058\u5e74\uff06\u6708\u306e\u3082\u306e\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
const dt1 = luxon.DateTime.fromSQL('2000-01-02');\r\nconst dt2 = luxon.DateTime.fromSQL('2000-01-03');\r\n\r\nif(dt1.hasSame(dt2, 'month'<\/strong>)) {\r\n\r\n    console.log('\u540c\u3058\u5e74\u30fb\u6708\u3067\u3059\uff01');\r\n\r\n}<\/pre>\n
\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306fmonth<\/code>\u3068\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u5358\u7d14\u306b\u6708\u3060\u3051\u3092\u6bd4\u8f03\u3057\u3066\u3044\u306a\u3044<\/strong>\u3068\u3044\u3046\u90e8\u5206\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u4e0a\u306e\u4f8b\u3067\u8a00\u3046\u3068dt2<\/code>\u304c2001<\/strong>-01-03<\/code>\u306e\u5834\u5408\u3001hasSame()<\/code>\u306ffalse<\/code>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u65e5\u4ed8\u3092\u6bd4\u8f03\u3059\u308b<\/h1>\n
\uff12\u3064\u306e\u65e5\u4ed8\u306e\u5dee\u3092\u53d6\u5f97\u3059\u308b<\/h2>\n
\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\uff12\u3064\u306e\u65e5\u4ed8\u3092\u6bd4\u8f03\u3057\u3066\u300c\u3069\u308c\u3060\u3051\u65e5\u6570\u304c\u9055\u3046\u304b\u300d\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u3067\u3059\u3002<\/p>\n