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dayjs-jp-format

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day.jsのformat関数にて日本の元号を表示するためのプラグインです。
A plugin is an independent module that can be added to Day.js to extend functionality or add japanse calendar features.

Usage

  1. Install the repository

    $ npm install --save dayjs-jp-format
    $ npm install --save dayjs # peer dependency

    or

    $ yarn add dayjs-jp-format
    $ yarn add dayjs # peer dependency
  2. Import the jp format

     import { jpFormat } from 'dayjs-jp-format' // load on demand
    
     dayjs.extend(jpFormat) // use plugin
    
     const date = '2020-06-24'
    
     dayjs(date).format('rrrr') // --> 令和02

Format

Format Output Description
rr 令和 日付に応じた元号
rrrr 令和02 日付に応じた和暦(年は除く)

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