Easy Duration Picker In Vanilla JavaScript – html-duration-picker.js
A pure JavaScript duration picker that allows the user to pick duration (in hours, minutes, seconds) in a normal input field.
Date & Time
Full-featured Calendar JavaScript Library – tui.calendar
tui.calendar is a powerful, full-featured calendar library used to showcase custom events, schedules, tasks in daily, weekly, and monthly views.
Beautiful Date Picker Component – MCDatepicker
A well-designed, fully responsive, highly-customizable, framework-agnostic date & date range picker component written in Vanilla JavaScript.
Versatile Datetime Picker For Bulma – bulma-calendar
A responsive, customizable, and feature-rich Date & Time picker component for Bulma framework.
Developer-friendly Date Picker In Pure JavaScript – thedatepicker
thedatepicker is a simple, customizable, developer-friendly date picker plugin implemented in pure (vanilla) JavaScript.
Easy Timer/Countdown/Chronometer Library – easytimer.js
easytimer.js is an easy-to-use JavaScript library that allows to count up to or countdown from a given value with callback support.
Convenient Analog Clock With JavaScript And SVG – Uptime
A JavaScript-powered analog clock that rotates second/minute/hour dials instead of moving the hands.
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.
1kb Relative Datetime Formatting Library – timeago.js
A super tiny (less than 1kb) time ago (also called relative time) JavaScript library.
Analog Clock/Stopwatch Web Component
A highly customizable analog clock & stopwatch component built using Custom Elements.