https://github.com/vale1534/weeks

Get week numbers since January 1, 1970, get begin or other days in specified week.
https://github.com/vale1534/weeks

Last synced: 6 days ago
JSON representation

Get week numbers since January 1, 1970, get begin or other days in specified week.

• Host: GitHub
• URL: https://github.com/vale1534/weeks
• Owner: vale1534
• Created: 2017-07-05T08:18:54.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-07-05T08:24:16.000Z (over 7 years ago)
• Last Synced: 2023-10-29T21:42:50.203Z (about 1 year ago)
• Language: JavaScript
• Size: 27.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Weeks

## 怎么安装？

直接复制 `src/weeks.js` 文件，需要 ES6 支持。

## 什么功能？

计算某天是第几周，从 1970 年 1 月 1 日算起。

```js

import { weekOfDate } from 'weeks';

// 计算某天是第几周

const today = new Date();

const theWeek = weekOfDate(today);

```

反过来，计算某周的第一天和最后一天是哪天。默认以星期天为起始日，通过 `weeks.setStartOfWeek(1);` 设置以星期一为起始日。

```js

import { setStartOfWeek, firstDayOfWeek, lastDayOfWeek } from 'weeks';

// 以星期一为起始日

setStartOfWeek(1);

// 计算第 2048 周的星期一和星期日

const firstDay = firstDayOfWeek(2480);

const lastDay = lastDayOfWeek(2480);

```

## 时区因素

**weeks** 默认使用当地时间计算第几周、第几天。也可通过 `weeks.setTimezoneOffsetMS()` 更改，具体请参考源码。