cashRegister with function

gistfile1.js

// sum shopping cart items js

// shopping cart object
const cartForParty = {
  banana: "1.25",
  handkerchief: ".99",
  Tshirt: "25.01",
  apple: "0.60",
  nalgene: "10.34",
  proteinShake: "22.36"
};


// define a function for getting the sum total of a shopping cart;
const sumShoppingCart = function ( cart ) { // cart expects an object with key/value pair for items
  // extract values arram from Object: 
  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_objects/Object/values
  const cartArray = Object.values(cartForParty);
  
  let cartArrayNumValue = 0 ; // empty variable for final sum

  for (let i = 0; i < cartArray.length; i = i + 1) {
    // cartArrayNum[i] = Number(cartArray[i]); // not needed for output, can put this straight into the sum.

    // accumlating the array of number values
    cartArrayNumValue += Number(cartArray[i]);
  };
  
  // return our sum so it can be used elsewhere
  return cartArrayNumValue; 
}

// call our sumShoppingCart function and give it the cartForParty to sum. Print the returned sum.
console.log( sumShoppingCart( cartForParty ) );