Simple Date Calculator: DateCalc

A simple date calculator from my personal project Zhihu-Spider

NPM

DateCalc

Test

Test Framework is ava

npm install
npm test

update

@v1.0.6

add the time(timestamp) function that returns full date

@v1.0.6

add the beforeCN and afterCN function that returns chinese format days

@v1.0.5

fix bug of monthEN() function

@v1.0.4

add the today function

const DateCalc = require('date-calc')
const d = new DateCalc()

d.today() // returns today date

@v1.0.3

fix the new Date() bug of Safari of macOS and iOS

@v1.0.2

1. update: method now()

The now() can receive a parameter like now(20161001)

const DateCalc = require('date-calc')
let d = new DateCalc();
console.log(d.now()) // returns now date
d.now('20161002')  // changs DateCalc's inner data
console.log(d.now()) // returns 20161002
console.log(d.before()) // returns 20161001
console.log(d.after(10)) // returns 20161012

2. add: method weekDay()

The weekDay() returns an Object of weekdays info

const DateCalc = require('date-calc')
let d = new DateCalc('20161001');
d.weekDay() // returns { day: 6, en: 'Sat', cn: '六' }

Usage

const DateCalc = require('date-calc')
// or ES2015
// import DateCalc from 'date-calc'

let d = new DateCalc('20460818');
d.before();
d.after();
d.before(2);
d.after(2);
d.now();
d.month();
d.beforeMonth()
d.afterMonth()

Parameters

• new DateCalc() no parameters means today
• new DateCalc('20460818') reference date

Instance Method

• d.before() the day before reference date 20460817
• d.after() the day after reference date 20460819
• d.before(2) twos days before reference date 忽略初始天数 20460816
• d.after(2) twos days after reference date 20460820
• d.now() now date 20460818
• d.month() the month of reference date 204608
• d.beforeMonth() the month before reference date 204607
• d.afterMonth() the month after reference date 204609
• month English descripe
  • new DateCalc('20460118').monthEN() returns 'Jan'
  • new DateCalc('20460218').monthEN() returns 'Feb'
  • new DateCalc('20460318').monthEN() returns 'Mar'
  • new DateCalc('20460418').monthEN() returns 'Apr'
  • new DateCalc('20460518').monthEN() returns 'May'
  • new DateCalc('20460618').monthEN() returns 'Jun'
  • new DateCalc('20460718').monthEN() returns 'Jul'
  • new DateCalc('20460818').monthEN() returns 'Aug'
  • new DateCalc('20460918').monthEN() returns 'Sep'
  • new DateCalc('20461018').monthEN() returns 'Oct'
  • new DateCalc('20461118').monthEN() returns 'Nov'
  • new DateCalc('20461218').monthEN() returns 'Dec'
• month Chinese descripe
  new DateCalc('20460118').CHN() returns '2046年01月18日'