Bleep Beep


#1

var cashRegister = {
total:0,
//Dont forget to add your property
lastTransactionAmount:0,
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
voidLastTransaction: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.voidLastTransaction();
cashRegister.scan('chocolate',3);
//Show the total bill
console.log('Your bill is '+cashRegister.total);


#2

Solved it Should not have placed [;] in this.total -=this.lastTransactionAmount;
};


#3

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