Datepicker

Gives you the most basic datepicker functionality, while having total freedom on what to do with the selected date(ISO8601), its display format, and the overall look & feel.

🦢 A Preact datepicker component

🦩 Lightweight (2.9kB minified+gzipped)

🦆 No-frills- Just give you the standard ISO8601 date. Provide your own formatter function for display.

🦅 You can skip the external CSS file and style yourself completely using pure CSS

Demo

https://kheohyeewei.com/datepicker/

Installation

You can install datepickerdate as an NPM package:

npm install datepickerdate

Or link directly to the CDN:

CommonJS

<script src="https://unpkg.com/datepickerdate@1.0.12/lib/index.cjs.js"></script>

UMD

<script src="https://unpkg.com/datepickerdate@1.0.12/lib/index.js"></script>

ES Module

<script
  type="module"
  src="https://unpkg.com/datepickerdate@1.0.12/lib/index.esm.js"
></script>

Styles

You can either just use my CSS:

<link
  rel="stylesheet"
  href="https://unpkg.com/datepickerdate@1.0.12/lib/index.css"
/>

// in a css file
@import './node_modules/datepickerdate/lib/index.css';

// js file with bundler(webpack)
import "datepickerdate/lib/index.css";

Or, skip all that and style your own with pure CSS!

The wrapper div of the component has a CSS class called dpd as a namespace, and each of the major UI elements in the datepicker has an associated class you can select for styling.

For example, to style the .calendar element,

you would do this in your CSS file:

.dpd .calendar {
  background-color: #f1f1f1;
  font-size: 0.8rem;
}

So it's just pure CSS- You select a class name, but here we 'namespace' it under the .dpd class to prevent classes collision.

Usage

Well, you use it like any other React component with props:

import { Datepicker } from "datepickerdate";

class Datepicker extends Component {
  handleCtrlChange(name, value) {
    console.log(name, value);
  }

  render() {
    return (
      <Datepicker
        name="yourFormControlName"
        value="2019-08-28"
        placeholder="Your custom placeholder"
        onDateChanged={this.handleCtrlChange}
      />
    );
  }
}

Formatting

In practise, the display and transmission of a date are usually in a very different format.

To give you total control in both cases, this datepicker simply output selected dates in the standard ISO8601 format e.g 2019-10-22.

To display a selected date however you want, you will provide your own function that accepts an argument that is a ISO8601 date in string.

For example, to display a date like Fri 28:

function dateFormatter(dateStr) {
  const date = new Date(dateStr);
  return `${date.toLocaleString("en-US", { month: "short" })} ${date.getDate()}`;
}

...

<Datepicker formatter={dateFormatter} />

Storage

Before transmitting and storing your date, you might want to convert it to a UTC format by simply doing this:

new Date().toISOString() // 2019-10-05T05:51:02.124Z

Locales

Locales defaults to user's browser's default locale. It uses the Date.prototype.toLocaleString()

Props

name: string
Optional

The name of your datepicker control. Exactly like the name in <input name="age" />

placeholder: string
Optional

The placeholder for your datepicker input field.

value: string
Optional

The initial date value.

It must be in a format that can be parsed by the Date object. The standard practise is follow the ISO8601 format (e.g 2019-10-22) or in UTC (e.g 2019-10-05T05:51:02.124Z)

onDateChanged: (name: string, date: string) => void
Optional

A function to handle date changes.

Parameter:

name - The value of the value passed to the name prop.
date - The selected date in ISO8601 format as a string.

formatter: (date: string) => string
Optional

A function to convert a selected date into a desired format to display in the UI.

Parameter:

date - The selected date in ISO8601 format as a string.

Article

https://medium.com/@kilgarenone/own-your-datepicker-component-49ea2773115b

Credits

I started with this guide on building datepicker for React.

Jeremboo / datepicker