The package used to learn the date time related calculation algorithm (Not guaranteed to be bug free).

• 💪🏻 0 Dependencies
• ✅ Inmutable
• 🎯 Function First
• ⚡️ Only supported ES6+

In a browser

<script src="date-toolkit/date-toolkit.min.js"></script>

Using NPM

npm i date-toolkit

import dateToolkit from "date-toolkit";
import { monthDiff } from "date-toolkit";
import daysInMonth from "date-toolkit/src/daysInMonth";

dateToolkit.daysInMonth(Date.now());
monthDiff("2022/10/15", "2022/10/05", true);

• format(date, format?) format date, default: YYYY-MM-DD HH:mm:ss.
• add(date, value, unit?) date increase by unit.
• subtract(date, value, unit?) date decrease by unit.
• startOf(date, unit?, isStartOf?) get start date and time.
• endOf(date, unit?) :get end date and time.
• diff(date, diffDate, unit?) : compare two dates by unit.
• timestampFormat(timestamp) : timestamp format, up to days.
• daysInMonth(date) : get days in the month.
• dayOfYear(date) : get the day of the year.
• monthDiff(startDate, endDate, float?) : float is boolean type.
• quarter(date?) : get quarter of the date. (default current date)
• getSameMonthQuarter(date, quarter) : get the month with the same position in the specified quarter.
• isLeapYear(date) : whether it is a leap year.
• isEqual(startDate, endDate, unit?) : compare whether two dates in a specific unit are equal.