Counting Day

Mini library to count your day. sometime we just need to add some day to define a date like today, yesterday, last week, last 7 days, last 30 days, etc. But you feel too expensive to include a popular library with a big size of file. Now, you can do it with 5kB library. So, let's count your day!

Install

You can import counting-day.min.js to your js file like this and process it with your preprocessor.

You can install it via NPM

npm install counting-day

Import Module

import CountingDay from 'counting-day'
// Or
var CountingDay = require('counting-day');

Usage

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })

let info = counting.addDay(31).get()
console.log(info);
/** Will return object with full date info
{
  day: index of day (number: 0 - 6),
  date: the date (number: 1 - 31),
  month: index of month (number: 1 - 12),
  maxDay: the max day of the month (number: 28 - 31),
  year: current year,
}
*/

// will mutate the state of the instance
let last7Days = couting.addDay(-7).get() // date: 25, month: 12, year: 2016

// will directly return the object wihtout get() method and doesn't mutate the instance state
let last30Days = counting.addDay(-7, 1, 2, 2017) // date: 25, month: 1, year: 2017

// Will mutate instance state
let addMonth = counting.addMonth(2).get() // date: 25, month: 2, year: 2017

// Will not mutate the instance state since it has a initial date manually
let addMonthWithManualInit = counting.addMonth(2, 1, 2, 2017).get() // date: 1, month: 4, year: 2017

// Will mutate instance state
let addYear = counting.addYear(2).get() // date: 25, month: 2, year: 2020

// Will not mutate the instance state
let addYearWithInit = counting.addYear(2, 1, 1, 2017) // date: 1, month: 1, year: 2017

// Produce SQL format
let SQLFormat = counting.getSQLDate() // 2020-02-25

// return Date instance with current state as its arguments
let DateInstance = counting.getDate()

// then() function will return a new instance of CountingDay, so it will never mutate the last `counting` instance
let differentCounting = addYearWithInit.then()
  .addDay(5)
  .addMonth(1)
  .addYear(10)
  .getSQLDate()
// Will Return 2027-02-06

console.log(counting === differentCounting); // false

Methods

Constructor (Object: { date, month, year }) => (Instance)

First of all we need to init our Constructor.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
console.log(counting.get());

fromDate (Date: date) => (Instance)

Another way to create a new instance from the new Date() Object

const now = new Date()
const couting = CountingDay.fromDate(now)
console.log(counting.get());

isLeap (Number: year) => (Boolean)

It cares about the leap.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
console.log(counting.isLeap()); // false
counting.addYear(3) // year: 2020
console.log(counting.isLeap()); // true

const withManualInit = counting.isLeap(2040)
console.log(withManualInit); // true

maxDayCount (Number: month, Number: year) => (Number)

It can also count the max day of the month.

const couting = new CountingDay({ date: 1, month: 2, year: 2017 })
const maxDayOfFebruary = counting.maxDayCount()
console.log(maxDayOfFebruary); // 28

const anotherFebruary = counting.maxDayCount(2, 2020)
console.log(anotherFebruary); // 29

addDay (Number: count, [Number: date, [Number: month, [Number: year]]]) => (Object)

It can add your day with positive or negative value of count argument. Other arguments next to count is custom initial and it is optional, you can pass all of them or one of them. When you pass the custom initial arguments you will get a new CountingDay in the then() function.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
// Will mutate the state
counting.addDay(6)
console.log(couting.get()); // date: 7, month: 1, year: 2017

// Will not mutate the state
const customInit = counting.addDay(-2, 5) // start from date: 5
console.log(customInit); // date: 3, month: 1, year: 2017

const anotherCustomInit = customInit.then().addDay(-5, 15, 2, 2020)
console.log(anotherCustomInit) // date: 10, month: 2, year: 2020

addMonth (Number: count, [Number: date, [Number: month, [Number: year]]]) => (Object)

Just like addDay method, but it will add your month instead your date.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
// Will mutate the state
counting.addMonth(6)
console.log(couting.get()); // date: 1, month: 7, year: 2017

// Will not mutate the state
const customInit = counting.addMonth(-6, 1, 12) // start from date: 1, month: 12
console.log(customInit); // date: 1, month: 6, year: 2017

const anotherCustomInit = customInit.then().addMonth(12, 1, 1, 2020)
console.log(anotherCustomInit) // date: 1, month: 1, year: 2021

addYear (Number: count, [Number: date, [Number: month, [Number: year]]]) => (Object)

Has some behaviout with addDay and addMonth method. It will add your Year.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
// Will mutate the state
counting.addYear(6)
console.log(couting.get()); // date: 1, month: 1, year: 2023

// Will not mutate the state
const customInit = counting.addYear(-10, 1, 2, 2000) // start from date: 1, month: 2, year: 2000
console.log(customInit); // date: 1, month: 2, year: 1990

const anotherCustomInit = customInit.then().addYear(12, 1, 1, 2020)
console.log(anotherCustomInit) // date: 1, month: 1, year: 2022

then () => (Object)

then() method is not a instance method, it is a function returned by addDay, addMonth, or addYear method that run with custom initial argument.

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })

// Will not mutate the state
const customInit = counting.addMonth(6, 1, 2) // start from date: 1, month: 2
console.log(customInit); // date: 1, month: 8, year: 2017

const anotherCustomInit = customInit.then().addMonth(12, 1, 1, 2020)
console.log(anotherCustomInit) // date: 1, month: 1, year: 2021

get () => (Object)

Will return current state instance as an Object.

const now = new Date()
const couting = CountingDay.fromDate(now)
console.log(counting.get());
/*
  => {
    day: index of day (number: 0 - 6),
    date: the date (number: 1 - 31),
    month: index of month (number: 1 - 12),
    maxDay: the max day of the month (number: 28 - 31),
    year: current year,
  }
*/

getDate () => (Object)

This method will create Date instance from the current state

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
counting.getDate() // => new Date(2017, 1, 1)

getSQLDate () => (Object)

This method will return SQL date format from current state

const couting = new CountingDay({ date: 1, month: 1, year: 2017 })
counting.getSQLDate() // => 2017-01-01

Thank You for Making this useful~

Let's talk about some projects with me

Just Contact Me At:

• Email: [email protected]
• Skype Id: bosnaufal254
• twitter: @BosNaufal

License

MIT Copyright (c) 2016 - forever Naufal Rabbani