How to stop listening or un register from a messagehook
For example after doing something like
MathJax.Hub.Register.MessageHook("End Process", function (message) {
alert("end process");
});
you might want to clear or remove this listener.
Unfortunately, there is no direct API for removing a registered message hook (yet). But you can do the following:
var myHook = MathJax.Hub.Register.MessageHook("End Process", function (message) {...});
...
MathJax.Hub.signal.hooks["End Process"].Remove(myHook);
though I don't recommend doing it within the hook function itself (as that may throw off the processing of the list of hooks). Probably could do
setTimeout(function () {MathJax.Hub.signal.hooks["End Process"].Remove(myHook)},0);
however.