core-js is a popular library available for JavaScript. It is designed to be a modular standard library and it comes with polyfills for ECMAScript as well. It offers a wide range of features, including several cross-platform features. It welcomes sponsors and backers for the continued development and sustenance of the core-js project. Core-js is preferred for its different symbols, iterators and typed arrays. It is available for use on all the major browsers such as Google Chrome, Mozilla Firefox, Safari, Opera, Android Browser, iOS Safari, PhantomJS, NodeJS, Rhino and Deno, among others. It is known for being widely tested on different engines.

14,959,692
websites using core-js
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Websites using core-js by countrymarket share · top 8 countries
🇺🇸United States
7.8%
🇩🇪Germany
6.5%
🇬🇧United Kingdom
3.6%
🇫🇷France
3.1%
🇳🇱Netherlands
2.9%
🇮🇹Italy
2.7%
🇷🇺Russian Federation
1.9%
🇨🇦Canada
1.9%
0%2%4%6%8%
Websites using core-js by industrydetected industries
Technology & Computing · 21%Education · 18%Construction · 17%Medical & Healthcare · 16%Marketing & Advertising · 15%Shopping · 13%MARKETSHARE
Technology & Computing21%
Education18%
Construction17%
Medical & Healthcare16%
Marketing & Advertising15%
Shopping13%

Websites using core-js

showing 25 of 14,959,692
WebsiteCountryIndustryEmailsTitle / DescriptionSocials
crpt.ru🇷🇺Russian FederationSoftware Development3asupport@crpt.ru+64
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harvard.edu🇺🇸United StatesEducation10threunion_haa@harvard.edu+1398
Harvard University
Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders who make a difference globally.
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cnn.com🇺🇸United StatesMovies & TV30secondpitch@cnn.com+337
Breaking News, Latest News and Videos | CNN
View the latest news and breaking news today for U.S., world, weather, entertainment, politics and health at CNN.com.
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forter.com🇺🇸United StatesSoftware Development3csales@forter.com+28
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webex.com🇺🇸United StatesTelecommunicationsaaron.sierra@webex.com+40
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adriver.ru🇷🇺Russian FederationSoftware Developmentaccount@adriver.ru+10
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cloudns.net🇧🇬BulgariaTechnology & Computingabuse@cloudns.net+6
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applovin.com🇺🇸United StatesSoftware Developmentaccommodations@applovin.com+20
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doubleverify.com🇺🇸United StatesSoftware Developmentadvertisersupport@doubleverify.com+62
Home - DoubleVerify
DoubleVerify is driven by a mission – to make the digital advertising ecosystem stronger, safer and more secure.
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docker.com🇺🇸United StatesSoftware Developmentbeta-feedback@docker.com+51
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weebly.com🇺🇸United StatesTechnology & Computing420strains@weebly.com+229
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mcafee.com🇺🇸United StatesCybersecurityadam_scheblein@mcafee.com+149
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huawei.com🇨🇳ChinaTelecommunications20180221122209.9292-1-shameerali.kolothum.thodi@huawei.com+2822
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kaspersky.com🇨🇭SwitzerlandCybersecurity22vulnerability@kaspersky.com+263
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cpanel.net🇺🇸United StatesSoftware Developmentaathowe2@cpanel.net+75
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plesk.com🇺🇸United StatesSoftware Developmentadavydov@plesk.com+19
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criteo.com🇫🇷FranceMarketing & Advertisinga.dubucq@criteo.com+154
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stanford.edu🇺🇸United StatesEducation22mailto_fhabte@stanford.edu+19999
Stanford University
Our mission of discovery and learning is energized by a spirit of optimism and possibility that dates to our founding.
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t-online.de🇩🇪GermanyEntertainment-
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ibm.com🇺🇸United StatesTechnology & Computing202-528-7479jonathan.adashek@ibm.com+1588
IBM
For more than a century, IBM has been a global technology innovator, leading advances in AI, automation and hybrid cloud solutions that help businesses grow.
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reg.ru🇷🇺Russian FederationTechnology & Computinga.podluzhnova@reg.ru+43
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taboola.com🇺🇸United StatesSoftware Developmentangela.f@taboola.com+35
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w3.org🇺🇸United StatesNon-profit & Charity22public-webapi@w3.org+1138
W3C
The World Wide Web Consortium (W3C) develops standards and guidelines to help everyone build a web based on the principles of accessibility, internationalization, privacy and security.
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cisco.com🇺🇸United StatesSoftware Development1ear@cisco.com+3318
AI Infrastructure, Secure Networking, and Software Solutions - Cisco
Cisco is a worldwide technology leader powering an inclusive future for all. Learn more about our products, services, solutions, and innovations.
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discord.com🇺🇸United StatesSoftware Developmentabuse@discord.com+22
Discord - Group Chat That’s All Fun & Games
Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.
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Showing 25 of 14,959,692 websitesGet the full list →

Frequently asked

What is core-js?›
Core-js is a modular standard library for JavaScript that provides polyfills and features that JavaScript engines don't have by default. It includes basic utilities, ECMAScript features, and additional stable proposals that are useful for modern JavaScript development.
What are the advantages of using core-js?›
Core-js offers several advantages including cross-browser compatibility, easy integration with build tools and bundlers, and a wide range of polyfills for modern JavaScript features. By using core-js, developers can ensure a consistent experience across different platforms and devices, and utilize the latest language features without sacrificing support for older engines.
Does core-js support ES6 features?›
Yes, core-js fully supports ECMAScript 6 (ES6) features as well as later editions of the standard, and also includes some experimental features and proposals that might become part of future standards. By utilizing core-js, developers can use modern ES6 features and be assured of compatibility across engines that do not natively support them.
How can I include core-js in my project?›
You can include core-js in your project either by installing it via npm or yarn (`npm install core-js` or `yarn add core-js`) and then importing the required polyfills in your code, or by using a CDN to load the library directly in your HTML file. Once included, the polyfills will automatically patch the environment, providing the missing features.
How does core-js handle conflicts between native implementations and polyfills?›
Core-js is designed to avoid conflicts between its polyfills and native implementations of the same features. When a polyfill is loaded, core-js checks if the native implementation is already available and compliant with the standard. If so, the native implementation is used; otherwise, core-js replaces or extends the native feature with its polyfill to ensure a consistent behavior across environments.

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