Zepto fallback to jQuery

Question

I\'m using ZeptoJS for my web app, but I\'d like to fall back to jQuery if the browser doesn\'t support Zepto. Since IE is the only major browser not supported at the moment

Answer 1

While many of the existing answers work fine when loading Zepto.js via an additional request, I have a situation where I know Zepto will suffice most of the time and I just want to merge it in with my scripts and lazily load jQuery if needed. I put together a small wrapper for Zepto will do just that.

• Zepto conditional loading wrapper

It runs the "offical" '__proto__' in ... test and lazy loads jQuery if it fails. If it succeeds, then it continues loading Zepto.

I found that IE8 would blow up if Zepto was even loaded. This fixes that by skipping the rest of the module.

For the optimistic case, there isn't any additional script requests. For the jQuery path, well, those users weren't exactly getting the fast experience anyway.