npm 包 PersianCalendarHelper 使用教程

PersianCalendarHelper 是一个 Node.js 的 npm 包，用于解析和操作波斯历（Persian calendar）。本教程将介绍如何使用该包来进行波斯历的转换和运算。

安装

在终端运行以下命令安装该包：

npm install persiancalendarhelper

示例

1. 获取当前波斯历日期

const { PersianDate } = require('persiancalendarhelper');
const pDate = new PersianDate();
console.log(`Today is ${pDate.date()} ${pDate.monthName()} ${pDate.year()}`);

输出：

Today is 28 Esfand 1400

2. 转换为公历日期

const gDate = pDate.toGregorian();
console.log(`The corresponding Gregorian date is ${gDate.toISOString().slice(0, 10)}`);

输出：

The corresponding Gregorian date is 2022-03-19

3. 增加或减少日期

const { addDays } = require('persiancalendarhelper');
const nextDay = addDays(pDate, 1);
const prevDay = addDays(pDate, -1);
console.log(`Tomorrow is ${nextDay.date()} ${nextDay.monthName()} ${nextDay.year()}`);
console.log(`Yesterday was ${prevDay.date()} ${prevDay.monthName()} ${prevDay.year()}`);

输出：

Tomorrow is 1 Farvardin 1401
Yesterday was 27 Esfand 1399

4. 比较日期

const { compare } = require('persiancalendarhelper');
const isBefore = compare(pDate, nextDay) < 0;
console.log(`Is today before tomorrow? ${isBefore ? 'Yes' : 'No'}`);

输出：

Is today before tomorrow? Yes

5. 获取两个日期之间的天数

const { diff } = require('persiancalendarhelper');
const daysDiff = diff(pDate, nextDay);
console.log(`There are ${daysDiff} days between today and tomorrow`);

输出：

There are 1 days between today and tomorrow

总结

使用 PersianCalendarHelper 包可以轻松地进行波斯历和公历日期之间的转换和运算。通过上述示例代码，可以快速了解如何使用该包并进行相应的操作。

来源：JavaScript中文网 ，转载请注明来源 https://www.javascriptcn.com/post/600668e6d9381d61a3540b21