🆚 jQuery vs. Polyfill

jQuery is a fast, small, feature-rich JavaScript library designed to simplify HTML DOM tree traversal and manipulation, event handling, CSS animations, and Ajax.

It provides a cross-browser selector engine, formerly known as Sizzle, supports deferred and promise objects for asynchronous workflows, has built-in JSON parsing and utility functions, and allows extensibility through a large ecosystem of plugins.

Polyfill.io is an open-source JavaScript library that provides modern web API features to older browsers that do not natively support them.

After a supply chain attack in 2024 involving its cdn.polyfill.io domain, the service was discontinued and is now safely mirrored and maintained by Cloudflare under independent management.

Popularity

Determined by the number of sites using each technology.

• 🥇 Most popular in the United States in the JavaScript Libraries category.
• 🥇 Most popular in Germany in the JavaScript Libraries category.
• 🥇 Most popular in Japan in the JavaScript Libraries category.
• 🥇 Most popular in the United Kingdom in the JavaScript Libraries category.
• 🥇 Most popular in France in the JavaScript Libraries category.

• 🥈 Second most popular in Russia in the JavaScript Libraries category.
• 🥈 Second most popular in Belarus in the JavaScript Libraries category.
• 🥈 Second most popular in Jamaica in the JavaScript Libraries category.
• 🥈 Second most popular in Curacao in the JavaScript Libraries category.
• 🥈 Second most popular in the Turks and Caicos Islands in the JavaScript Libraries category.

Top sites

Top-ranked sites that use these technologies.

Compare alternatives

Technologies with similar characteristics.

• jQuery vs. MooTools
• jQuery vs. Prototype
• jQuery vs. Scriptaculous
• jQuery vs. YUI
• jQuery vs. Zepto

• Polyfill vs. Regenerator
• Polyfill vs. Core-js
• Polyfill vs. Fastly Polyfill
• Polyfill vs. Babel
• Polyfill vs. ES6 Shim

• jQuery technology profile
• OpenJS Foundation company profile

• Polyfill technology profile