Question

I am passing a callback function as a parameter to a function, and I am doing this in various parts of my web app.

I want the callback to react a little differently in some cases, can I pass a parameter somehow to this callback?

soemethod(callback);
otherethod(callback);

otherother(callback(a=1));

How could I pass a=1 in the callback?

Answer 1

Simply use an anonymous function wrapped around your parameterized function call:

otherother(function () {
    callback(1); // assuming the first parameter is called a
});