you have to change your compression to accommodate the fuel (ask someone who knows the flashpoint for ethanol VS JP-8, I'm not one of them) but other than that, it runs the same, essentially. Jets are amazingly simple machines, unlike ICEs (Ok, so maybe studying makes them seem so, but they are by FAR simpler in theory) they really just need some source of heat to work. You can run them on pure hydrogen, as a matter of fact. The concerns involve mixing of the flow and the fuel, and flame propogation speed. If the flame burns faster than the combustor velocity, you're good, as long as the fuel readily atomizes and distributes well into the flow.
To be clear: I wouldn't go putting E85 in the JSF just yet, you most likely have to modify it for a different compression and combustor length/speed.