dayKey関数
リファレンスの説明と例は英語です。見出しと目次は日本語です。
The calendar day a moment falls on, as YYYY-MM-DD: in UTC unless an IANA
time zone such as Asia/Tokyo is named. A name is passed on to Intl, which
throws a RangeError for a zone it does not know.
インポート
import { dayKey } from "@johnmorrisdotca/kotoba";定義
function dayKey(moment?: Date | number, zone?: string): DayKey引数
| 名前 | 型 | 説明 |
|---|---|---|
moment (省略可) | number | Date | A Date or Unix milliseconds to interpret. |
zone (省略可) | string | undefined | An optional IANA time zone; UTC when omitted. |
戻り値
string
The calendar day a moment falls on, as YYYY-MM-DD: in UTC unless an IANA time zone such as Asia/Tokyo is named. A name is passed on to Intl, which throws a RangeError for a zone it does not know.
例
import { dayKey } from "@johnmorrisdotca/kotoba";
console.log(dayKey(new Date("2026-10-12T12:00:00Z")));2026-10-12出力（このページを作ったときに実行した結果）
この日本語は、まだ日本語を母語とする方の確認を受けていません。訂正を歓迎します。