Help with this? Can't spot error


#1

Thanks for the help?



Oops try again! There was a problem with you syntax
Syntax token unexpected error (


var cashRegister = {
    total:0,
    add: function(itemCost){
        this.total += itemCost;
    }
};
add: function(itemCost,lastTransactionAmount) {
this.total += itemCost;
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(lastTransactionAmount) {
this.total -= 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(0.45*4);
cashRegister.scan('chocolate',3);
//Show the total bill
console.log('Your bill is '+cashRegister.total);

//call the add method for our items

cashRegister.add(0.98 + 1.23 + 4.99 + 0.45);



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


#2

Remember that lastTransactionAmount is a method of the object so has a context variable in its identifier:

 this.lastTransactionAmount

#3

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