Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
function sale(items) {
  let price = {
    'cat': 5,
    'sofa': 10,
    'cheese': 1,
    'snow': 2,
    'snow=2': 0
  }
  let total = 0
  for (let item of items) {
    let current = price[item]
    total = total + current
  }
  return total
}


let result_1 = sale(['cat', 'sofa'])
console.log(result_1)


let result_2 = sale(['cheese', 'snow=2', 'snow', 'cat', 'snow'])
console.log(result_2)
</script>


<script id="jsbin-source-javascript" type="text/javascript">function sale(items) {
  let price = {
    'cat': 5,
    'sofa': 10,
    'cheese': 1,
    'snow': 2,
    'snow=2': 0
  }
  let total = 0
  for (let item of items) {
    let current = price[item]
    total = total + current
  }
  return total
}


let result_1 = sale(['cat', 'sofa'])
console.log(result_1)


let result_2 = sale(['cheese', 'snow=2', 'snow', 'cat', 'snow'])
console.log(result_2)
</script></body>
</html>