The W3C has been working on a Web Cryptography API for a while, now. The current version (11 December 2014) is their “Candidate Recommendation”. As such, I would not necessarily consider it fully ready for primetime but that does not mean that we can not play around with it a bit. I figured that today, we should take a check out getRandomValues().
According to MDN, “To guarantee enough performance, implementations are not using a truly random number generator, but they are using a pseudo-random number generator seeded with a value with enough entropy.” You do not want to use this method to generate encryption keys (especially since generateKey() is available within the same API). I think that this method is more foundational than anything. It is just meant to be part of the plumbing.
Have some thoughts? Drop a comment below.