A custom callback to an event on an object call Fighter

Event trigger callback

_.extend(Fighter, {
    all: [],
    events: {},
    on: function (eventTitle, callback) { 
        event[eventTitle] = this.events[eventTitle] || [];
        this.events[eventTitle].push(callback);
    },
    trigger: function (eventTitle){
        var callbacks = this.events[eventTitle];
        var arg = arguments[1];
        callbacks = callbacks || [];
        callbacks.forEach(function (callback){
            callback(arg);
        });
    },
    //... other stuff....
}



// 

Fighter.trigger('enterTheDojo') // Does nothing

Fighter.on('enterTheDojo', function () { askForMoney }); //  Establishes event listener
Fighter.trigger('enterTheDojo')  // calls `askForMoney`

Fighter.on('enterTheDojo', funciton () { impartWisdom }); // Establishes event listener

Fighter.trigger('enterTheDojo') //  call `askForMoney` and then `impartWisdom`