Vanilla JavaScript Form Validation with Custom Rules and Messages – js-validation
Validate HTML forms on the client side with js-validation, a dependency-free JavaScript library with rules, custom messages, and submit callbacks.
Javascript
StPageFlip: Realistic Book Page Flip Animation In JavaScript
Create book-style page flip animations with StPageFlip. Supports HTML pages, image books, mobile swipes, and npm or CDN setup.
Lightweight Tooltip Library with Smart Positioning – easy-tooltips
A lightweight, zero-dependency tooltip library with automatic positioning and CSS variable customization for modern web apps.
Lightweight Accessible Datepicker Calendar Component – DateDreamer
An easy, lightweight, and accessible date picker & calendar component written in Vanilla JavaScript.
Trendyways.js: Financial Technical Analysis for Stock Indicator
A JavaScript technical analysis library for stock time series, chart data preparation, trend indicators, and pivot levels.
5,600+ Brand SVG Icons for Developers – theSVG
6,000+ brand SVG icons as typed React, Vue, and Svelte components with CDN, SVG/PNG, CLI, and MCP server support.
Modern Vanilla JS Library for Scrollytelling – Scrolleo
A modern vanilla JavaScript library for scroll-driven interactions. Zero dependencies, IntersectionObserver-based, full TypeScript support.
Interactive SVG World Map Library – svgMap.js
The svgMap.js lets you create an interactive, SVG powered world map on the webpage, with support for Info Window which can be used to present any data when the user hovers over a specific country and region.
Dither Images for E-Paper Displays in JavaScript – EPD Optimize
A JavaScript library that reduces, tone-maps, and dithers images for color e-paper displays using calibrated palettes in browser or Node.js.
Persian Jalali & Gregorian Date Picker in Vanilla JS – Azar Datepicker
Add a Jalali or Gregorian date/time picker to any input with Azar Datepicker.