The Cash Register

• Write a function called cashRegister that takes a shopping cart object. The object contains item names and prices (itemName: itemPrice). The function should return the total price of the shopping cart.
• Example

  // Input
  var cartForParty = {  
    banana: "1.25",
    handkerchief: ".99",
    Tshirt: "25.01",
    apple: "0.60",
    nalgene: "10.34",
    proteinShake: "22.36"
  };
  
  // Output
  cashRegister(cartForParty)); // 60.55
  

See Solution



function cashRegister(cart){
  var items = Object.keys(cart); // array of items by key   
  var sum = 0; 
  
  for (var i = 0; i < items.length; i++) {
    var itemName = items[i]; // get the name of the key for the item
    var itemPrice = cart[itemName]; // get the price for the item
    sum += Number.parseFloat(itemPrice); // convert the price to a float and add it to the sum
  }

  return sum;
}