🆚 Core-js vs. Modernizr
- 📈 Modernizr is five times more popular than Core-js.
- 🌎 Modernizr is more popular in the United States, the United Kingdom, and Germany.
- 🌍 Core-js is more popular in Aruba, the Turks and Caicos Islands, and American Samoa.
Core-js
ModernizrType
About
Core-js is a modular standard library for 
JavaScript that provides polyfills for ECMAScript up to 2024: promises, symbols, collections, iterators, typed arrays, and proposals.
Modernizr is an open-source feature detection library that identifies browser support for 
HTML, 
CSS, and JavaScript features and allows websites to adapt accordingly.
It enables developers to detect supported browser features at runtime, apply progressive enhancement, load polyfills only when required, and provide fallbacks for unsupported features.
Headquarters
Pricing
Categories
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- ⬆️ 30th most popular in Israel in the JavaScript Libraries category.
- ⬆️ 36th most popular in the Philippines in the JavaScript Libraries category.
- ⬆️ 37th most popular in Hong Kong in the JavaScript Libraries category.
- ⬆️ 38th most popular in Brazil in the JavaScript Libraries category.
- ⬆️ 38th most popular in Mexico in the JavaScript Libraries category.
- ⭐ 6th most popular in Lebanon in the JavaScript Libraries category.
- ⭐ 7th most popular in Germany in the JavaScript Libraries category.
- ⭐ 7th most popular in Bulgaria in the JavaScript Libraries category.
- ⭐ 7th most popular in Croatia in the JavaScript Libraries category.
- ⭐ 7th most popular in Luxembourg in the JavaScript Libraries category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
🗃️ 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 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.