Building Polyfills (eBook, PDF)
Web Platform APIs for the Present and Future
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Add custom features to browsers old and new by writing polyfill libraries, JavaScript plugins that take browsers beyond their native capabilities. In this practical fieldbook, author Brandon Satrom introduces principles and guidelines for polyfill development, and then walks you through the steps for building a complex, real-world HTML5 polyfill.Youll also explore the future of polyfillingor prollyfillingthat will enable you to test and work with emerging concepts, often ahead of browser vendors. By the time you finish this book, youll have the tools and hands-on experience you need to build r...
Add custom features to browsers old and new by writing polyfill libraries, JavaScript plugins that take browsers beyond their native capabilities. In this practical fieldbook, author Brandon Satrom introduces principles and guidelines for polyfill development, and then walks you through the steps for building a complex, real-world HTML5 polyfill.Youll also explore the future of polyfillingor prollyfillingthat will enable you to test and work with emerging concepts, often ahead of browser vendors. By the time you finish this book, youll have the tools and hands-on experience you need to build reliable polyfills for todays and tomorrows Web.Learn the current state of polyfills, including shims, opt-ins, and drop-insUse principles and practices to build responsible polyfills that benefit the entire web development communityBuild out several features for an HTML5 Forms polyfill libraryConfigure a build environment and run automated cross-browser testingOptimize performance, handle edge cases, and fine-tune the speed of your polyfillGet examples of prollyfilling libraries that push the boundaries of the WebWrite a sample prollyfill and compare it to current polyfill builds
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