Polyfill

Polyfill is used by 1.12% of sites

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A polyfill, also known as a polyfiller, is a piece of code or a JavaScript library that provides a browser with functionality that is not natively supported. It allows developers to use new features or APIs in older browsers that do not have built-in support for those features.

The term "polyfill" is derived from the words "poly" (meaning "many") and "fill" (meaning to "fill the gaps"). Polyfills fill the gaps in browser support by replicating the functionality of newer features using JavaScript code.

The main purpose of a polyfill is to ensure backward compatibility, allowing developers to write code using modern standards and APIs while ensuring that it works in older browsers. Polyfills typically detect whether a specific feature is supported by the browser and, if not, provide a fallback implementation.

Here are a few key points about polyfills:

Feature Detection: Polyfills typically use feature detection techniques to determine if a particular feature is supported by the browser. They check for the existence of specific methods, objects, or properties associated with the feature before applying the polyfill.

Conditional Loading: Polyfills can be conditionally loaded based on whether the browser needs them. Modern JavaScript bundlers and build tools provide mechanisms to load polyfills only when necessary, minimizing unnecessary code execution.

Customizability: Polyfills can be customized and tailored to specific requirements. Developers can choose which polyfills to include based on the targeted browser support or specific features required by their application.

Performance Considerations: While polyfills enable the use of modern features in older browsers, they come with a performance overhead. Polyfills add extra code that needs to be downloaded and executed by the browser, potentially impacting page load times and runtime performance.

Feature Completeness: Polyfills may not always provide a complete implementation of a feature or API. They often focus on the most commonly used parts and may have limitations or subtle differences compared to the native implementation in modern browsers. It is essential to review the documentation and limitations of each polyfill to ensure it meets the specific requirements of the project.

Polyfills have been widely adopted as a strategy to achieve cross-browser compatibility and leverage modern web technologies while supporting older browsers. Numerous polyfills are available for different features and APIs, and they are commonly used to enable features like HTML5, CSS3, new JavaScript methods, and other browser-specific functionality.

As browsers continue to evolve and add support for new features, the need for certain polyfills may decrease. However, they remain valuable tools for ensuring broad compatibility and bridging the gap between older and newer browser versions.

Top Websites using Polyfill

: Bounce ratePages / VisitVisit duration
251tropponice.com: n/a 11.40 n/a
252definicionde.com: n/a 11.40 n/a
253privva.com
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254tvg.com Horse Racing Wagering, Resources, Online Betting | TVG.com Watch and bet live horse races legally from the comfort of your home with the world’s leading network: TVG. Gain an edge on the competition with insights from our experts and an amazing WELCOME bonus! Perfect for betting tracks like Del Mar, Gulfstream, Saratoga, Monmouth Park, and Keeneland.: 26.09 7.10 27:01
255kidsvids.com: n/a 3.92 n/a
256yummyplanet.es: n/a 50.00 n/a
257pizzahut.co.uk Pizza Delivery, Restaurants and Takeaway | Order Online with Pizza Hut Pizza Delivery, Restaurants and Takeaway | Order Online with Pizza Hut: n/a 8.00 n/a
258playhq.com: 60.65 7.50 05:47
259grabagun.com Attention Required! | Cloudflare GrabAGun gift card electronic gift certificates are the perfect gift! You can set the price you want and send it to anyone! All you need is their name, their email address (typed in carefully and correctly) and the amount you want the gift card to be for. It's that simple! Plus, if you choose to, you can personalize the gift with a message from you like, "Happy Birthday, or, "Congratulations!" It's quick and easy, and they get the gift they really want. Why not send one right now? They will love it!: 42.33 5.15 03:32
260redirec.org: n/a 46.00 n/a
261theshowofhands.com: n/a 3.30 n/a
262diybaker.com diybaker.com diybaker.com: n/a 7.80 n/a
263xtargeting.com Access Denied yesuphost is a leading server hosting and colocation service provider in toronto, canada. we ensure 99.9% up time, minimal latency & high speeds. sign up: n/a 7.40 n/a
264puercha.cc: n/a 26.00 n/a
265devkohbee.web.app Kohbee Live Teach online, Free Online Teaching app: n/a 1.00 n/a
266airnavradar.com AirNav Radar - Global Flight Tracking Intelligence | Live Flight Tracker and Airport Status Real-time flight tracking with one of the best and most accurate ADS-B coverage worldwide. Check airport arrivals and departures status and aircraft history.: 30.62 13.75 03:57
267wakeforest.edu: n/a 4.90 n/a
268rolluptherimtowin.com
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270gaphomes.com Gap Homes: 16.36 3.37 07:54
271coldwellbankerhomes.com Find Real Estate & Homes For Sale - ColdwellBankerHomes.com ColdwellBankerHomes.com can help you find homes for sale, rentals, condos, Realtors and information about your local real estate market.: 67.63 2.37 02:16
272udf.org.br: n/a 29.00 n/a
273yampi.com.br A Yampi nasceu para revolucionar os produtos digitais para e-commerce. Nosso desafio diário é redefinir e aprimorar os processos de compra e venda online.: n/a 11.00 n/a
274jdsports.co.uk JD Sports | Shop Online Now JD Sports is the leading trainer & sports fashion retailer in the UK ✓Free Standard Delivery Over £70 ✓10% Student Discount ✓Buy Now, Pay Later: 44.16 0.00 07:14
275lebania.com: n/a 76.00 n/a
276quellochefaperte.altervista.org: n/a 1.00 n/a
277wilko.com Just a moment... Product catalogue, special offers, store locator and news from high street chain selling DIY products, kitchenware, clothing, toys, garden and everyday essentials. Wilko is the home of family value and great savings with stores nationwide. We have a huge range of hardware, homeware and garden products to buy online.: n/a 0.00 n/a
278necrogaming.com: n/a 17.60 n/a
279salirickandres.altervista.org: n/a 1.00 n/a
280casamundo.cz 401 Authorization Required: n/a 23.00 n/a
281cwonder.com cwonder.com Shop C. Wonder online and discover an inspiring collection of women's clothing with a fresh twist, personalized gifts, stylish accessories, and unique home décor.: n/a 4.60 n/a
282fastfatburner.com: n/a 4.44 n/a
283mmaireland.org: n/a 3.49 n/a
284yahoosmallbusiness.net: 69.42 34.00 25:34
285chinabrands.com Best global dropshipping suppliers: Wholesale China items,Boost online business -Chinabrands.com Chinabrands.com specializes in dropshipping suppliers, one-click upload online, source the order, 24-Hour delivery, '1 item' dropshipping with risk-free way for online stores worldwide: 66.10 3.60 04:10
286ebuzzing.es: n/a 23.00 n/a
287iqhealth.com
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IQHealth is your personal view into the electronic medical record that your hospital, doctors, and nurses use to manage and do***ent your care.: n/a 5.50 n/a
288fotobon.com: n/a 3.10 n/a
289bigceramicstore.com Pottery Supplies – Big Ceramic Store and Supply Offers a large selection of ceramic and pottery supplies, equipment, and accessories. Find the best deals on discounted pottery and ceramic supplies including clay, kilns, pottery equipment, ceramic glazes and clay tools for sale online at the Big Ceramic Store and Supply.: 63.06 27.00 05:26
290dhabc.net: n/a 6.10 n/a
291serasa.com.br Tudo Sobre Finanças e Dicas para Você Conseguir Crédito - Serasa Consulte seu CPF e Score grátis. Solicite empréstimo com taxas que cabem no seu bolso. Saiba como limpar seu nome e acompanhe nossos especialistas.: 36.69 2.30 06:58
292archambault.ca Musique, livres, vidéos, DVD, jeux | Archambault Accueil: n/a 4.30 n/a
293warriox.net Warriox Adventure ~ Log In ~ FREE PvP PBBG/MMORPG/MUD ~ persistent browser based / massively multiplayer online role playing game / multi user dungeon As you come along the bend in the path, you see the entrance to Old Towne Cottonwood. Entering Old Town Cottonwood, you see a fountain, which almost seems to be calling your name. You decide to stop there for a rest and a refreshing drink. A dark and ominous stranger walks up to you, and you realize from his bloody sword and tattered ancient armor, that he has been in many a fight. He tells of the Underground, full of hideous creatures of all types, and how they reach out with their razor sharp claws in an effort to gouge your flesh. You listen intently as he describes all of the fallen heroes, which he has tripped over in the darkness of the Underground. You begin your adventure...: n/a 53.00 n/a
294leadsjet.com: n/a 6.90 n/a
295greennews.ng Greennews.ng - …fresh from home Greennews.ng is a Top Source for Breaking news, Exclusive articles and headlines: n/a 16.10 n/a
296hotelcasagonzalez.com: n/a 19.00 n/a
297healthylark.com Healthy Lark: n/a 3.45 n/a
298bestinsurancesite.com Bestinsurancesite4u: n/a 6.40 n/a
299expectantmom.com expectantmom.com expectantmom.com: n/a 7.00 n/a
300mydiba.club دیبا موویز | دانلود رایگان فیلم و سریال: n/a 4.71 n/a

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