Swfobject/swfobject. HTML5 Cross Browser Polyfills · Modernizr/Modernizr Wiki. The No-Nonsense Guide to HTML5 Fallbacks So here we're collecting all the shims, fallbacks, and polyfills in order to implant HTML5 functionality in browsers that don't natively support them.
The general idea is that: We, as developers, should be able to develop with the HTML5 APIs, and scripts can create the methods and objects that should exist. Developing in this future-proof way means as users upgrade, your code doesn't have to change but users will move to the better, native experience cleanly. Looking to conditionally load these scripts (client-side), based on feature detects? The Developer’s Guide To Writing Cross-Browser JavaScript Polyfills. I believe it's one of our responsibilities as designers and developers to both advocate for best practices and encourage others to make the leap to using modern features for a modern web.
At the same time, we need to do our best to avoid leaving users with older browsers behind. Polyfills – a term coined by Remy Sharp to describe JavaScript shims that replicate the standard API found in native features of new browsers for those without such features – are a way of helping us achieve this. In today's post, I'm going to recount my experience of creating a cross-browser polyfill along with the lessons learned along the way.
I'll also give you some tips on how you can create your own polyfills and avoid some of the headaches developers often run into when coding them for the first time. I believe in not leaving any feature behind - we shouldn't need to make the decision not to use the functionality a feature offers just because it isn't natively supported in some browsers.