What is wrong with my code? the math is correct


#1

Hi everyone,

The outcome ($13.74) seems to be right. So what is wrong with my code, please?

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

cashRegister.scan('eggs',1);
cashRegister.scan('milk',1);
cashRegister.scan('magazine',3);

cashRegister.applyStaffDiscount(me);

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


#2

It should be like this:

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


#3

Thanks Eren, appreciated :slightly_smiling: