dateonly

A JavaScript class that stores a date without a time.

About

DateOnly is a data type that will only store a date, without an associated time. This allows you to work with dates without having to worry about time zones shifting the date.

A simple example is a person's birthday - a birthday is not a single moment in time, but rather a full day. DateOnly is the perfect data type to represent such data.

Installation

npm install dateonly

Usage

// CommonJS
var DateOnly = require('dateonly');

// AMD
require(['DateOnly'], function(DateOnly) { ... });

// Script Tag
var DateOnly = window.DateOnly;

var DateOnly = require('dateonly');
var myBirthday = new DateOnly('7/4/1980');

API

new DateOnly(defaultValue)

defaultValue: undefined

If nothing is passed into the DateOnly constructor, it will default to today's date.

defaultValue: Date

If a Date object is passed in, the DateOnly instance will be set to the Date's date.

defaultValue: String

If a String is passed in, it will be passed to the Date constructor, and that new Date instance will then be used to set the DateOnly's date.

defaultValue: Number

If a Number is passed in, it will be passed to the Date constructor, and that new Date instance will then be used to set the DateOnly's date.

---

new DateOnly().setDate(date)

Sets the date portion of the DateOnly instance.

date: Number

The number to set the date to. No validation is performed.

Example:

var date = new DateOnly('1/1/2000');
date.setDate(20);
console.log(date); // { date: 20, month: 0, year: 2000 }
date.setDate(80);
console.log(date); // { date: 80, month: 0, year: 2000 }

---

new DateOnly().getDate()

Gets the date portion of the DateOnly instance.

---

new DateOnly().setMonth(month)

Sets the month portion of the DateOnly instance. As with the Date object, January === 0.

month: Number

The number to set the month to. No validation is performed.

---

new DateOnly().getMonth()

Gets the year portion of the DateOnly instance.

---

new DateOnly().setFullYear(year)

Sets the year portion of the DateOnly instance.

month: Number

The number to set the year to. No validation is performed.

---

new DateOnly().getFullYear()

Gets the year portion of the DateOnly instance.

---

new DateOnly().getDay()

Gets the day of the week of the DateOnly instance. As with the Date object, Sunday === 0.

---

new DateOnly().toDate()

Returns the Date representation of the DateOnly instance.

Example:

var dateOnly = new DateOnly('1/1/2000');
dateOnly.toDate() instanceof Date // true
dateOnly.toDate();                // Sat Jan 01 2000 00:00:00 GMT-0600 (CST)

---

new DateOnly().valueOf() | new DateOnly().toJSON()

Returns the numeric representation of the DateOnly instance, of the form YYYYMMDD.

Example:

var dateOnly = new DateOnly('7/15/2000');
dateOnly.valueOf() // 20000615
dateOnly.toJSON()  // 20000615

---

new DateOnly().toString()

Returns the date string of the DateOnly instance. This is equivalent to calling new DateOnly().toDate().toDateString().

Example:

var dateOnly = new DateOnly('7/4/2000');
dateOnly.toString() // 'Tue Jul 04 2000'

---

If you are using Mongo and Mongoose, there is a package that will allow you to store and query DateOnly properties that can be found here.

Test

npm test