[Solved By Self] Bleep Bleep


#1


https://www.codecademy.com/courses/close-the-super-makert/0/5?curriculum_id=506324b3a7dffd00020bf661


Returns '0'


var cashRegister = {
    total:0,
    lastTransactionAmount: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
    voidLastTransaction: function()
    {
        cashRegister.total = cashRegister.total - cashRegister.lastTransactionAmount;
    },
    
};


cashRegister.scan('chocolate',3);

//Void the last transaction and then add 3 instead
cashRegister.voidLastTransaction();

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

Edit: after looking over the code, not sure what I was doing :stuck_out_tongue:

Solved:

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
    voidLastTransaction: function()
    {
        this.total = 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

voidLastTransaction: function()
    {
        this.total = total - lastTransactionAmount
        return this.total
    }; // unnecessary semi-colon

see comment, having too much semi-colons can cause problems

a new error message will arise, but first try to troubleshoot this yourself


#3

Thanks, I'll continue to edit as I go along.


#4

Fixed it, will edit code.


#5

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