⚡ JavaScript Libraries in Ireland

JavaScript libraries are collections of prewritten code that provide reusable functions and components for building interactive features and handling common client-side tasks in web applications.

Ireland is a Western European country with a population of over 5.1 million people.

According to our statistics, JavaScript libraries are used on 77.3% of websites from Ireland.

⭐ Most Popular in 2026

The following chart shows the top JavaScript libraries in Ireland in 2026, based on market share.

The most popular is jQuery, which dominates the market with an overwhelming 88.1% share.
It is followed by Swiper with 20.1% and Facebook SDK with 17.4%.

jQuery 88.1%
Swiper 20.1%
Facebook SDK 17.4%
Polyfill 15.7%
ImagesLoaded 13.5%
🍪 JS Cookie 13.4%
jQuery BlockUI 10.8%
Slick 10%
Modernizr 9.4%
Lottie 9.2%
Waypoints 9.1%
Owl Carousel 8.9%
React 8.5%
Underscore.js 8.3%
FlexSlider 7.9%

🚀 Highlights

Here is a list of the top libraries that are more popular in Ireland than worldwide.
Differences between global and country rankings are shown in parentheses.

6. 🍪 JS Cookie ^(-2)
7. jQuery BlockUI ^(-9)
9. Modernizr ^(-3)
14. Underscore.js ^(-3)
15. FlexSlider ^(-4)
20. Isotope ^(-1)
23. SmartMenus ^(-1)
24. Web Font Loader ^(-3)
25. jQuery Mousewheel ^(-7)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 260 JavaScript libraries used on sites from Ireland, ranked by their market share.

Rank	Name	Market share
1	jQuery San Francisco, California, United States A fast, small, feature-rich JavaScript library designed to simplify HTML DOM tree traversal and manipulation, event handling, CSS animations, and Ajax. FreeOpen source	88.1%
2	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	20.1%
3	Facebook SDK Menlo Park, California, United States A library that provides client-side tools for Social Plugins, Facebook Login, and Graph API calls. Free	17.4%
4	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	15.7%
5	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	13.5%
6	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	13.4%
7	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	10.8%
8	Slick An open-source, fully responsive and accessible carousel library. FreeOpen source	10%
9	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	9.4%
10	Lottie San Francisco, California, United States An animation framework created by Airbnb that lets developers export Adobe After Effects animations as JSON and render them natively on mobile, desktop, and the web. FreeOpen source	9.2%
11	Waypoints West Linn, Oregon, United States A library that makes it easy to execute a function whenever you scroll to an element. FreeOpen source	9.1%
12	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	8.9%
13	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	8.5%
14	Underscore.js Boston, Massachusetts, United States A utility library for JavaScript that provides support for functional programming helpers (each, map, reduce, filter) without extending any built-in JavaScript objects. FreeOpen source	8.3%
15	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	7.9%
16	MediaElement.js Dallas, Texas, United States A free audio and video player with support for media files (MP4, WebM, MP3), streaming content (HLS, Dash), and embeddable players (YouTube, Facebook, Vimeo, Twitch, SoundCloud, etc). FreeOpen source	7.8%
17	Fancyapps A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	7.1%
18	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	7%
19	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	7%
20	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	6.7%
21	Lightbox San Francisco, California, United States The original lightbox library used to overlay images on top of the current page. FreeOpen source	6.4%
22	Regenerator Menlo Park, California, United States A JavaScript library from Facebook that allows the use of ES6 generators in older browsers. FreeOpen source	6.3%
23	SmartMenus A jQuery plugin for creating mobile-first, responsive, and accessible list-based website menus that work on all devices. FreeOpen source	5.4%
24	Web Font Loader San Jose, California, United States A JavaScript library that gives you added control when using linked fonts via @font-face. FreeOpen source	5%
25	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	4.8%

👉 See Also

✨ Related Technologies
- JavaScript
🌎 JavaScript Libraries in other countries

Data is based on the analysis of 12,783 websites from Ireland.
Statistics were last calculated on March 20, 2026.
For details, see our methodology and disclaimer.