Lightweight Date & Time Manipulation Library – dayjs
dayjs is a blazing-fast, ultra light (2kb) alternative to the moment.js library that helps you parse, validate, manipulate, and display dates and times in pure JavaScript.
Date & Time
Developer-friendly Date Picker In Pure JavaScript – thedatepicker
thedatepicker is a simple, customizable, developer-friendly date picker plugin implemented in pure (vanilla) JavaScript.
Vanilla JS Date Picker with Range Selection – EssealDatePicker
Zero‑dependency date picker that works with any framework. Includes min/max dates, custom formatting, and programmatic control.
Relative Time Element for Time Ago Text
Format ISO timestamps as localized relative time text with a custom HTML element that auto-updates in the browser.
Persian Jalali & Gregorian Date Picker in Vanilla JS – Azar Datepicker
Add a Jalali or Gregorian date/time picker to any input with Azar Datepicker.
ISO 8601 Date Format: UTC, Timestamps & JavaScript
See ISO 8601 date, time, UTC, offset, and timestamp formats, then format or parse them in JavaScript with native APIs and isoformat.
Lightweight Accessible Date Picker Component – WC Datepicker
A lightweight, accessible, customizable, multilingual, and framework-agnostic date picker & date range picker component written in pure JavaScript (TypeScript).
Human-Friendly Time Ago Text in Vanilla JS – humantime-js
Add human-friendly time text to comments, dashboards, and blog metadata with the small humantime-js library.
Qrono: JavaScript Date Manipulation with DST Support
Handle date-only values, immutable date math, UTC parsing, and DST transitions with the Qrono JavaScript library.
Google Material Inspired Time Picker Component – timepicker-ui
A vanilla JavaScript library to create a customizable, beautiful, mobile-friendly time picker component inspired by Google Material design system.