Developer-friendly Date Picker In Pure JavaScript – thedatepicker

thedatepicker is a simple, customizable, developer-friendly date picker plugin implemented in pure (vanilla) JavaScript.

How to use it:

Insert the Stylesheet the-datepicker.css and JavaScript the-datepicker.js into the HTML file.

<link href="dist/the-datepicker.css" rel="stylesheet" />
<script src="dist/the-datepicker.js"></script>

Create a normal text field to accept the date value.

<input type="text" id="example">

Attach the date picker to the text field. Done.

const input = document.getElementById('example');
const datepicker = new TheDatepicker.Datepicker(input);
datepicker.render();

Possible options, functions and API methods.

// set initial date
datepicker.options.setInitialDate();
// set initial month
datepicker.options.setInitialMonth();
// hide on blur
datepicker.options.setHideOnBlur();
// hide on select
datepicker.options.setHideOnSelect();
// set date format, e.g. j. n. Y
datepicker.options.setInputFormat();
// set the first day of week
datepicker.options.setFirstDayOfWeek();
// set min/max dates
datepicker.options.setMinDate();
datepicker.options.setMaxDate();
// limits the year selection
datepicker.options.setDropdownItemsLimit(1900, 2100);
// show/hide days when out of month
datepicker.options.setDaysOutOfMonthVisible();
// fixed rows count
datepicker.options.setFixedRowsCount();
// toggle selection
datepicker.options.setToggleSelection();
// show Deselect button
datepicker.options.setShowDeselectButton();
// show Close button
datepicker.options.setShowCloseButton();
// show Reset button
datepicker.options.setShowResetButton();
// allow empty
datepicker.options.setAllowEmpty();
// set title
datepicker.options.setTitle();
// show month picker as a dropdown
datepicker.options.setMonthAsDropdown();
// show year picker as a dropdown
datepicker.options.setYearAsDropdown();
datepicker.options.setMonthAndYearSeparated();
datepicker.options.setPositionFixing();
datepicker.options.setDateAvailabilityResolver((date) => {
  // return true;
});
datepicker.options.setCellContentResolver((day) => {
  // return day.dayNumber;
});
datepicker.options.addCellClassesResolver((day) => {
  // if (day.dayNumber === 20) return ['red'];
  // if (day.dayNumber === 10) return ['green'];
  return [];
});
datepicker.options.addDayModifier((day) => {
  // day.isSunday = day.dayOfWeek === TheDatepicker.DayOfWeek.Sunday;
});
datepicker.options.setCellClassesResolver((day) => {
  // return [];
});
datepicker.options.onBeforeSelect((event, day, previousDay) => {
  // callback
});
datepicker.options.onSelect((event, day, previousDay) => {
  // callback
});
datepicker.options.onBeforeSwitch((event, isOpening) => {
  // callback
});
datepicker.options.onSwitch((event, isOpening) => {
 // callback
});
datepicker.options.onBeforeGo((event, month, previousMonth) => {
  // callback
});
datepicker.options.onGo((event, month, previousMonth) => {
  // callback
});
// set prefix
datepicker.options.setClassesPrefix();
// set go back HTML
datepicker.options.setGoBackHtml();
// set go forward HTML
datepicker.options.setGoForwardHtml();
// set close HTML
datepicker.options.setCloseHtml();
// set reset HTML
datepicker.options.setResetHtml();
// set deselect HTML
datepicker.options.setDeselectHtml();
// localize the date picker
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Monday, 'Mo');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Tuesday, 'Tu');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Wednesday, 'We');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Thursday, 'Th');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Friday, 'Fr');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Saturday, 'Sa');
datepicker.options.translator.setDayOfWeekTranslation(TheDatepicker.DayOfWeek.Sunday, 'Su');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.January, 'January');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.February, 'February');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.March, 'March');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.April, 'April');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.May, 'May');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.June, 'June');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.July, 'July');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.August, 'August');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.September, 'September');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.October, 'October');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.November, 'November');
datepicker.options.translator.setMonthTranslation(TheDatepicker.Month.December, 'December');
// open the date picker
datepicker.open();
// close the date picker
datepicker.close();
// destroy the date picker
datepicker.destroy();

Alternatives:

• Feature-rich Calendar & Date Picker Components – Cally
• 10 Best Date And Timer Pickers In Pure JavaScript

Changelog:

v3.1.1 (08/13/2026)

• Update

v3.1.0 (07/09/2026)

• Update

v2.5.0 (03/27/2026)

• Update

v2.4.3 (03/26/2026)

• Update

v2.4.2 (07/25/2025)

• Update

v2.4.1 (08/31/2024)

• Update

v2.4.0 (07/24/2024)

• Added Option to update selected date on month change

v2.3.0 (12/07/2023)

• Updated dependencies

v2.2.0 (06/05/2023)

• Update

v2.1.6 (12/05/2022)

• Update

v2.1.4 (07/22/2022)

• Update

v2.1.3 (07/21/2022)

• Update

v2.1.2 (07/20/2022)

• Update

v2.1.1 (07/05/2022)

• Update

v2.1.0 (03/31/2022)

• Fixed Weekend / today is not bold by default

v2.0.0 (03/30/2022)

• Fixed Options bug

v1.1.2 (01/05/2021)

• Fullscreen opt-in

v1.1.0 (01/04/2021)

• Bugfix

v1.0.0/1.1.0 (10/08/2021)

• Update

v0.7.5 (07/21/2021)

• Touch events are passive

05/06/2021

• Deselect button title

v0.7.4 (02/10/2021)

• updated Typescript to the latest

v0.7.3 (02/10/2021)

• Package updated

v0.7.1 (07/10/2020)

• Fixed container positioning on mobile

v0.7.0 (06/17/2020)

• Fullscreen on mobile

v0.6.0 (06/17/2020)

• Prevent dates out of range

v0.5.5 (03/20/2020)

• Update

v0.5.4 (02/13/2020)

• Fixed when removing listeners/resolvers during triggering event

v0.5.3 (02/12/2020)

• added addDayModifier method

v0.5.2 (02/05/2020)

• bugfixed

v0.5.1 (01/30/2020)

• bugfixed

v0.5.1alpha (01/30/2020)

• privatize some methods

v0.5.0 (01/17/2020)

• Better minification

v0.4.9 (01/15/2020)

• JS update

v0.4.7 (12/16/2019)

• onDatepickerReady returns Promise

v0.4.7 (12/06/2019)

• Setting priority of initial month
• Publish parseRawInput

v0.4.3 (12/05/2019)

• update

v0.4.2 (12/04/2019)

• getCurrentMonth visible

v0.4.1 (11/22/2019)

• Customizable day cell content structure

v0.4.0 (10/08/2019)

• Option for merge month and year select

v0.3.5 (09/27/2019)

• Updated

v0.3.4 (09/26/2019)

• Fixed activating