Polyfill

Polyfill is used by 1.13% 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
1kacafiksi.my.id Kacafiksi Berita teknologi: 49.53 3.83 17:10
2guardianunlimited.co.uk
News, sport and opinion from the Guardian's US edition | The Guardian
Latest US news, world news, sports, business, opinion, ***ysis and reviews from the Guardian, the world's leading liberal voice: n/a 0.00 n/a
3theguardian.com
Latest news, sport and opinion from the Guardian
Latest news, sport, business, comment, ***ysis and reviews from the Guardian, the world's leading liberal voice: 48.25 2.46 03:03
4insideindiana.com Pay less for domain names. Bulk pricing and private domain name registration options. Transfer domain names risk-free.: n/a 6.03 n/a
5ebay-kleinanzeigen.de eBay Kleinanzeigen | Kostenlos. Einfach. Lokal. Anzeigen gratis inserieren mit eBay Kleinanzeigen Kostenlose Anzeigen aufgeben mit eBay Kleinanzeigen. Gebraucht oder Neu, Privat oder Gewerbe - Jetzt gratis inserieren auf Deutschlands meistbesuchtem Kleinanzeigen-Portal. eBay Kleinanzeigen | Kostenlos. Einfach. Lokal.: 26.49 10.66 08:54
6blue-creek-knives.myshopify.com Create an Ecommerce Website and Sell Online! Ecommerce Software by Shopify Shopify provides a reliable Ecommerce platform so you focus on selling online! Integrated hosting, shopping cart and Ecommerce payment solution all in one!: n/a 0.00 n/a
7depi.vic.gov.au Department of Environment, Land, Water and Planning Victorian Government Department providing information and services about building and maintaining healthy, natural environments; improving service delivery to regional areas; managing land and water on public and private land; managing the state's natural resources; and responding to fire, flood and biosecurity emergencies. The Department of Environment, Land, Water and Planning is focused on creating a liveable, inclusive and sustainable Victoria with thriving natural environments - where the community is at the centre of everything we do.: n/a 3.25 n/a
8thebigbounce.com
Set on Hawaii's stunning North S***, an all-star cast electrifies this remake of the 1969 classic based on Elmore Leonard's thrilling novel. It's a tale about a young drifter who falls for the gorgeous mistress of the wealthiest and most powerful man in town. When the illicit lovers team up to steal a fortune out from under her sugar daddy's nose, all hell breaks loose!: n/a 2.13 n/a
9mydogskip.com Kevin Bacon, Diane Lane and TV's newest star, Frankie Muniz (Malcolm In the Middle) star in this heartwarming coming-of-age story about a sensitive young Southern boy who learns valuable life lessons with the help of his dog, Skip. With Skip's remarkable and unconventional help, Willie and Skip turn bullies into friends, tangle with hapless moonshiners, and even win the: n/a 2.16 n/a
10payitforward.com Just imagine. You do a favor that really helps someone and tell him or her not to pay it back, but to pay it forward to three other people who, in turn, each pay it forward to three moreâ€”and on and on into a global outpouring of kindness and decency. Impossible? Junior high student Trevor McKinney wonâ€™t accept that.: n/a 2.05 03:40
11warnerbos.com Warner Bros. - Home of Warner Bros. Movies, TV Shows and Video Games including Harry Potter, DC Comics and more! Home of Warner Bros Movies, TV Shows and Video Games including Harry Potter, DC Comics and more!: n/a 2.05 n/a
12quicksilverscreen.im: n/a 8.40 n/a
13eyeswideshut.com
Tom Cruise and Nicole Kidman star as a married couple entangled in an intricate web of jealousy and *** obsession in Stanley Kubrick's final cinematic offering. At a Christmas party hosted by wealthy, unconventional Victor Ziegler (Sydney Pollack), provocative advances and innocent flirtations arouse suspicion as high-society physician Dr. William Harford (Cruise) and his: 100.00 2.05 n/a
14zbole.com zbole.com Forsale Lander: n/a 5.90 n/a
15thesportingnews.com Sporting News - NFL | NBA | MLB | NCAA | NASCAR | UFC | Boxing The latest news, videos, scores and more on the biggest sports, including NFL, NBA, MLB, NCAA, NASCAR and more with Sporting News: n/a 1.94 n/a
16adssyncusers.com adssyncusers.com adssyncusers.com: n/a 99.99 n/a
17nasty***.com: n/a 8.05 n/a
18moviestills.com Home of Warner Bros Movies, TV Shows and Video Games including Harry Potter, DC Comics and more!: n/a 1.97 n/a
19afitme.netlify.app Heart Me: 61.67 3.23 10:39
20iltasanomat.net Ilta-Sanomat - IS - Suomen suurin uutismedia Lue uutisia Suomesta ja maailmalta heti tuoreeltaan. IS seuraa uutistilannetta ympäri vuorokauden.: n/a 4.27 n/a
21vue-columns.netlify.app vue-columns Vue renderless functional component to dispatch children items in columns: 60.92 3.25 10:47
22texas.gov Texas.gov | The Official Website of the State of Texas Explore the official website of the State of Texas. We'll help you find the government services, information, and resources you need.: 45.25 4.90 04:57
23techforums.net: n/a 21.50 n/a
24vue-enqueue.netlify.app vue-enqueue Vue renderless functional component to dispatch children items in enqueue: 60.92 3.25 10:47
25kbb.com Access Denied Check car prices and values when buying and selling new or used vehicles. Find expert reviews and ratings, explore latest car news, get an Instant Cash Offer, and 5-Year Cost to Own information on KBB.com.: 42.42 4.96 03:32
26thebay.com Hudson's Bay: Canada's Iconic Department Store Shop Hudson's Bay for handbags, women's and men's clothing and shoes, and housewares. Free shipping on orders over $99.: 37.71 5.57 05:45
27prentice.k12.wi.us Prentice School District Links to Prentice schools. Prentice School District -- 1025 Town St., Prentice, WI 54556 -- (715)-428-2811 -- Copyright © 2015 Prentice School District. All Rights Reserved.: n/a 5.62 n/a
28postsentinel.com: n/a 14.50 n/a
29is.fi Ilta-Sanomat - IS - Suomen suurin uutismedia Lue uutisia Suomesta ja maailmalta heti tuoreeltaan. IS seuraa uutistilannetta ympäri vuorokauden.: 34.22 4.06 06:30
30yzhvictor.cloudapp.net Google vs Bing Google vs Bing: n/a 5.74 n/a
31lachattedacote.com Lachattedacote Lachattedacote: 24.45 19.83 12:04
32beliefnet.org Beliefnet Beliefnet is a lifestyle site that serves as your number one resource for faith, belief and spirituality. Visit our site daily for inspirational quotes, prayers for strength and words of comfort and hope.: n/a 4.20 n/a
33kprf-egorlyk.ru: n/a 80.00 n/a
34surveymountain.com surveymountain.com Forsale Lander: n/a 9.20 n/a
35glassdoor.ca Glassdoor Job Search | Find the job that fits your life Glassdoor helps you find a job and company you love. Reviews, salaries and benefits from employees. Interview questions from candidates. Millions of jobs.: 60.83 3.82 04:57
36***etuan.com
域名出售: n/a 5.30 n/a
37socialfail.com: n/a 8.90 n/a
38healthicloudsa.cloudapp.net healthicloudsa.cloudapp.net healthicloudsa.cloudapp.net: n/a 5.34 n/a
39optimizer365.com optimizer365.com Forsale Lander: n/a 2.88 n/a
40astrocareeronline.com: n/a 3.35 n/a
41recardo.ch: n/a 3.35 n/a
42charismaticcentral.com: n/a 71.00 n/a
43telus.ca TELUS - High Speed Internet, Home Phone Service, Television, Bundles TELUS Canada provides television, High Speed Internet and Home Phone services. Choose Optik TV or Satellite TV, access the Internet wirelessly with TELUS High Speed and get the most reliable Home Phone.: n/a 4.82 n/a
44filesonic.pk: n/a 3.29 n/a
45flaticon.com Access Denied Download Free Icons and Stickers for your projects. Images made by and for designers in PNG, SVG, EPS, PSD and CSS formats: 24.17 7.34 06:30
46mypoints.com MyPoints: Your Daily Rewards Program MyPoints: Your Daily Rewards Program: 35.92 5.31 05:21
47hullemantrucks.com Used trucks for sale - buy used trucks in Europe - Hulleman Trucks Every day, Hulleman Trucks sells new competitively priced trucks, tractor units, semi trailers, trailers and other transport vehicles all over the world.: 100.00 2.84 n/a
48mbportal.jp: n/a 8.70 n/a
49mbplatform.com: n/a 8.70 n/a
50veretekk.com Automated Online Marketing - Veretekk 2.0 Automated Online Marketing - Veretekk 2.0: n/a 7.70 n/a

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