{"id":6920,"date":"2025-09-04T16:36:44","date_gmt":"2025-09-04T07:36:44","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=6920"},"modified":"2025-06-04T16:54:12","modified_gmt":"2025-06-04T07:54:12","slug":"post-6920","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/6920","title":{"rendered":"JavaScript\u306e\u300cDay.js\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u65e5\u4ed8\u306e\u6bd4\u8f03\u3092\u884c\u3046\u65b9\u6cd5"},"content":{"rendered":"<p>JavaScript\u306e\u65e5\u6642\u30fb\u6642\u523b\u7528\u30e9\u30a4\u30d6\u30e9\u30ea\u300c<a href=\"https:\/\/taitan916.info\/blog\/archives\/5202\" target=\"_blank\" rel=\"noopener\">Day.js<\/a>\u300d\u3092\u7528\u3044\u3066\u65e5\u4ed8\u306e\u6bd4\u8f03\u3092\u884c\u3044\u305f\u304b\u3063\u305f\u3002\u5177\u4f53\u7684\u306b\u306f\u300c\u958b\u59cb\u65e5\u6642\u300d\u300c\u7d42\u4e86\u65e5\u6642\u300d\u306e\u3088\u3046\u306a\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u304c2\u3064\u3042\u308a\u3001\u300c\u958b\u59cb\u65e5\u6642\u300d\u304c\u300c\u7d42\u4e86\u65e5\u6642\u300d\u3092\u8d85\u3048\u3066\u3044\u308b\u5834\u5408\u306fNG\u3068\u3057\u305f\u3044\u3002\u8abf\u3079\u305f\u3068\u3053\u308d\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u8ffd\u52a0\u3059\u308c\u3070\u5b9f\u88c5\u3067\u304d\u308b\u307f\u305f\u3044\u3002\u4ee5\u4e0b\u306b\u5b9f\u88c5\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>CDN<\/h2>\n<p>CDN\u3067\u4f7f\u3046\u5834\u5408\u306f\u4ee5\u4e0b\u3092\u8a18\u8ff0\u3059\u308b\u3002\u300cisSameOrBefore.min.js\u300d\u304c\u4eca\u56de\u8ffd\u52a0\u3059\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u306b\u306a\u308b\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">&lt;script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/dayjs\/1.11.13\/dayjs.min.js\"&gt;&lt;\/script&gt;\r\n&lt;script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/dayjs\/1.11.13\/plugin\/isSameOrBefore.min.js\"&gt;&lt;\/script&gt;<\/pre>\n<p>\u7570\u306a\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5229\u7528\u3057\u305f\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u304b\u3089\u63a2\u3059\u3002<\/p>\n<p><a href=\"https:\/\/cdnjs.com\/libraries\/dayjs\" target=\"_blank\" rel=\"noopener\">https:\/\/cdnjs.com\/libraries\/dayjs<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>\u5b9f\u88c5\u65b9\u6cd5<\/h2>\n<h3>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/\/\u30d7\u30e9\u30b0\u30a4\u30f3\u8aad\u307f\u8fbc\u307f\r\ndayjs.extend(dayjs_plugin_isSameOrBefore);\r\n\r\nconst date_1 = dayjs('2025-08-01 00:00:00');\r\nconst date_2 = dayjs('2025-08-31 00:00:00');\r\n\r\n\/\/2025-08-01\u306f2025-08-31\u3088\u308a\u904e\u53bb\u304b\u3069\u3046\u304b\r\nconsole.log(date_1.isBefore(date_2)); 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