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dayjsで日本時間タイムゾーンで時刻を表示する

Node.js
dayjs

Last updated at 2020-12-17Posted at 2020-12-17

//事前設定
const dayjs = require('dayjs') // v1.9.7
dayjs.extend(require('dayjs/plugin/timezone'))
dayjs.extend(require('dayjs/plugin/utc'))
dayjs.tz.setDefault('Asia/Tokyo')

// 現在時刻
console.log(dayjs.tz().format())
// -> 2020-12-17T09:57:06+09:00

// from UTC
console.log(dayjs.utc('2020-12-17T00:00:00Z').local().format())
// -> 2020-12-17T09:00:00+09:00

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