h5bp/html5please — Issue #50: Respond.js Performance?
Author: davatron5000
Created: 2012-01-23 18:44:16+00:00
State: open

> "you can use Respond.js, but be aware it has performance overhead that slows down page load."

I wanted to ask why Respond.js got a conditional recommendation? Is there data to support this as a noticeable performance issue? I've skimmed through the [sister H5BP issue](https://github.com/h5bp/html5-boilerplate/issues/816) but no data provided, it's just assumed "Clearly [media query polyfills] have this extra cost for IE baked in".

Thanks!

- Dave "Ball-Busterz" Rupert