Title
Building Polyfills: Web Platform APIs for the Present and Future,Used
Delivery time: 8-12 business days (International)
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, realworld HTML5 polyfill.You'll 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, you'll have the tools and handson experience you need to build reliable polyfills for today's and tomorrow's Web. Learn the current state of polyfills, including shims, optins, and dropins Use principles and practices to build responsible polyfills that benefit the entire web development community Build out several features for an HTML5 Forms polyfill library Configure a build environment and run automated crossbrowser testing Optimize performance, handle edge cases, and finetune the speed of your polyfill Get examples of prollyfilling libraries that push the boundaries of the Web Write a sample prollyfill and compare it to current polyfill builds
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To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.