Module Pattern for creating a "step" and passing it handler functions

app.js

var step1 = new Step($elem);

// an example handler funciton

var highlightStep = function(){
    this.$elem.addClass('highlight');
    
}

step1.addHandler(highlightStep);

// later in your code

step1.highlightStep();

step.js

var Step = (function(){
    this.state = 'loading';
    this.$elem = {};
    
    this.getStatus = function(){
        return this.state;       

    }
    
    this.addHandler = function(handler, callback){
        if(typeof handler === 'function'){
            this.prototype['handler']['name'] = handler;
        }
        
        callback();
        
    }
    
    this.init = function($elem){
        this.$elem = $elem;
        return step;
    }
    
    var step = {
        addHandler: addHandler,
        removeHandler: removeHandler,
        getStatus: getStatus
        
    }
})()