Axel Rauschmayer axel at
Mon Dec 19 15:16:33 PST 2011

My understanding:
- Shim: retrofit a new API in an older context.
- Polyfill: “A shim that mimics a future API providing fallback functionality to older browsers.”

On Dec 19, 2011, at 19:54 , Rick Waldron wrote:

> Mark, It [polyfill] was coined by Remy Sharp
> ...I still don't understand how it differs from "shim"

Dr. Axel Rauschmayer
axel at


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