5. Oops,try again: False. Getting the right answer though, on the right


#1

var cashRegister = {
total: 0,
//Dont forget to add your property
add: function(itemCost) {
this.total += itemCost;
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;
},
//Add the voidLastTransaction Method here
voidLastTransactionAmount: function() {
this.total -= this.lastTransactionAmount;
}

};

cashRegister.scan('eggs', 1);
cashRegister.scan('milk', 1);
cashRegister.scan('magazine', 1);
cashRegister.scan('chocolate', 4);

//Void the last transaction and then add 3 instead
cashRegister.voidLastTransactionAmount();
cashRegister.scan('chocolate', 3);

//Show the total bill
console.log('Your bill is ' + cashRegister.total);


#2

I do not know what is wrong, please help. Thanks


#3

The variable is not yet defined.

//Dont forget to add your property

lastTransactionAmount: 0,

Should be, voidLastTransaction.


#4

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