⚡ JavaScript Libraries in El Salvador

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.

El Salvador is a Central American country with a population of over 6.3 million people.

According to our statistics, JavaScript libraries are used on 90.4% of websites from El Salvador.

Statistics based on 550 analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is jQuery, which dominates the market with a substantial 91.1% share.
It is followed by Swiper with 41% and 🍪 JS Cookie with 33.4%.

jQuery 91.1%
Swiper 41%
🍪 JS Cookie 33.4%
Lottie 32.6%
Waypoints 31.8%
Facebook SDK 20.5%
Slick 11.9%
Polyfill 11.5%
ImagesLoaded 11.5%
Owl Carousel 11.3%
Lazysizes 8.5%
Underscore.js 7.6%
jQuery BlockUI 7.4%
MediaElement.js 7.2%
Magnific Popup 6.4%

🚀 Highlights

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

3. 🍪 JS Cookie ^(-5)
4. Lottie ^(-6)
5. Waypoints ^(-6)
11. Lazysizes ^(-18)
12. Underscore.js ^(-5)
13. jQuery BlockUI ^(-3)
14. MediaElement.js ^(-1)
18. Popper ^(-7)
21. Regenerator ^(-2)
23. Masonry ^(-5)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 162 JavaScript libraries used on sites from El Salvador, 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	91.1%
2	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	41%
3	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	33.4%
4	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	32.6%
5	Waypoints West Linn, Oregon, United States A library that makes it easy to execute a function whenever you scroll to an element. FreeOpen source	31.8%
6	Facebook SDK Menlo Park, California, United States A library that provides client-side tools for Social Plugins, Login, and Graph API calls. Free	20.5%
7	Slick An open-source, fully responsive and accessible carousel library. FreeOpen source	11.9%
8	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	11.5%
9	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	11.5%
10	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	11.3%
11	Lazysizes Berlin, Germany A fast lazy loader library for images, iframes, and scripts/widgets. FreeOpen source	8.5%
12	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	7.6%
13	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	7.4%
14	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	7.2%
15	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto. FreeOpen sourceLegacy	6.4%
16	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	6.2%
17	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	6.2%
18	Popper Monza, Italy A JavaScript library used for positioning and displaying tooltips, popovers, and dropdowns. FreeOpen source	5.8%
19	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	5.6%
20	Fancyapps A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	5.6%
21	Regenerator Menlo Park, California, United States A JavaScript library from Facebook that allows the use of ES6 generators in older browsers. FreeOpen source	5.6%
22	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	4.8%
23	Masonry Alexandria, Virginia, United States A cascading grid layout library that places elements in optimal positions based on available vertical space. FreeOpen source	4.8%
24	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	4.8%
25	Wow.js A JavaScript library that reveals CSS animations when you scroll. FreeOpen source	4%

👉 See Also

🌎 JavaScript Libraries in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 550 websites from El Salvador.
We currently track the presence of 310 JavaScript libraries across the web.
Of these, 162 were detected on websites from El Salvador.
Statistics were last calculated on May 5, 2026.
For more details, see our methodology and disclaimer.