facebook/react — pull request #474 by spicyj (2013-11-05 19:12:17+00:00)
Title: tutorial: class -> className, simpler ajax options

dataType was unnecessary; mimeType was unnecessary and wrong in this case. Also converted class -> className everywhere and changed pollInterval to 2000 ms for consistency with https://github.com/petehunt/react-tutorial (faster is nicer when you actually try it out!).

@petehunt I'll make the same changes in a pull request to react-tutorial.