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JavaScript

Posted by Eli E
Eli E
10,142 Points

Javascript: help making program work.

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

    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


};

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);

Edit: Added code tags to make the question much more readable. - Dane Parchment (Moderator)

Eli E
Eli E
10,142 Points 
var cashRegister = { total:0, //Dont forget to add your property add: function(itemCost) { this.total += itemCost; var lastTransactionAmount=itemCost; voidLastTransaction:function(){ this.total-=lastTransaction;
} }, ,

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
};

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);

Edit: Added code tags to make the question much more readable. - Dane Parchment (Moderator)