内容简介：Perform date calculations given a simple string pattern.The pattern declaring what calculations to perform.
datecalc
Perform date calculations given a simple string pattern.
Install
$ npm install @tuplo/datecalc # or with yarn $ yarn add @tuplo/datecalc
Usage
import datecalc from '@tuplo/datecalc';
Performs calculations assuming now by default
// assuming New Year's Day 2020, 14:00
// in two days, same time
datecalc('2D'); // → new Date('2020-01-03T14:00:00')
// two weeks ago
datecalc('-2W'); // → new Date('2019-12-18T14:00:00')
// in 15 minutes
datecalc('15m'); // → new Date('2020-01-01T14:15:00')
// tomorrow, two hours less than now
datecalc('1D -2h'); // → new Date('2020-01-02T12:00:00')
Performs sucessive calculations
// 58 years and 2 months from now, less 4 hours
datecalc('58Y 2M -4h'); // → new Date('2078-03-01T10:00:00')
Calculates from a given date
const birthday = new Date('1961-07-04T11:00:00');
// 58 years from birthday
datecaclc('58Y', birthday); // → new Date('2019-07-04T11:00:00')
Accepted patterns
| Pattern | Period |
|---|---|
| D | Day |
| W | Week |
| M | Month |
| Y | Year |
| h | Hour |
| m | Minute |
| s | Second |
API
datecalc(format: string, fromDate?: Date): Date
pattern: string
The pattern declaring what calculations to perform.
Format: /([0-9-]+[DWMYhms])/g
fromDate: Date
The starting moment from when to start calculating.
Default: new Date(Date.now())
Return value: Date
Returns a new Date
Contribute
Contributions are always welcome!
License
MIT
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