Bleep Bleep not a function


#1


For some reason, it says the my voidLastTransaction is not a function even though it is obviously defined exactly like the other functions.


Error message: TypeError: cashRegister.voidLastTransaction is not a function
Here is the code:


var cashRegister = {
    total:0,
    //Dont forget to add your property
    lastTransactionAmount: 0,
    add: function(itemCost) {
        this.total +=  itemCost;
        var 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
    voidLastTransasction: 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

You have a typo in your function definition

    voidLastTransasction: function(){
        this.total -= this.lastTransactionAmount;
    }

#3

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