You deserve it


#1


You deserve it


HELP the code is showing this on screen
Your bill is NaN


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("Me",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);


#2

here:

cashRegister.applyStaffDiscount('me');

me is a string, so if we then look at the math of applyStaffDiscount method:

applyStaffDiscount : function(employee){
        this.total -= this.total * (employee.discountPercent / 100);
    },

well, the string "me" doesn't have have a discountPercent, so that isNaN, causing total to be NaN (nan = not a number)

when you call applyStaffDiscount you should pass me as argument, the object you created at line 10.


#3

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