Calling a callback in javascript

Question

I am not so strong in javascript.

I have a common function that I call from many parts of my code passing them some parameters.

Can somebody help me on

Answer 1

It is actually quite simple.

function callback() {
    alert("I am in the callback!");
}

function work(func) {
    alert("I am calling the callback!");
    func(); 
}

work(callback);