J.S. Project: Building a Cash Register

// Here is my final J.S. Project before I move on to Python: 

function StaffMember(name,discountPercent){

    this.name = name;

    this.discountPercent = discountPercent;

}

var sally = new StaffMember("Sally",5);

var bob = new StaffMember("Bob",10);

// Create yourself again as 'me' with a staff discount of 20%

var me = new StaffMember("Jenny",20);

var cashRegister = {

    total:0,

    lastTransactionAmount: 0,

    add: function(itemCost){

        this.total += (itemCost || 0);

        this.lastTransactionAmount = itemCost;

    },

    scan: function(item,quantity){

        switch (item){

        case "eggs": this.add(0.98 * quantity); break;

        case "milk": this.add(1.23 * quantity); break;

        case "magazine": this.add(4.99 * quantity); break;

        case "chocolate": this.add(0.45 * quantity); break;

        }

        return true;

    },

    voidLastTransaction : function(){

        this.total -= this.lastTransactionAmount;

        this.lastTransactionAmount = 0;

    },

    // Create a new method applyStaffDiscount here

    applyStaffDiscount: function(employee){

        this.total -= (this.total*(employee.discountPercent/100));

    }

    

};

cashRegister.scan('eggs',1);

cashRegister.scan('milk',1);

cashRegister.scan('magazine',3);

// Apply your staff discount by passing the 'me' object 

// to applyStaffDiscount

cashRegister.applyStaffDiscount(me);

// Show the total bill

console.log('Your bill is '+cashRegister.total.toFixed(2));