Untitled

<!DOCTYPE html>
<html>
<head>
<meta name="description" content="[add your bin description]">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
var sam = [1, 2, 3, 4, 5, 7, 7, 3, 9, 190, 15];
var saluti = ['ciao', 'buongiorno'];

function sum (acc, val){
  return acc+val
}

function isPari(elem) {
  if (elem%5==0 || elem==7){
      return true;
    }
    return false
}
//console.log ('somma= '+sam.reduce(sum))
console.log (sam.filter(isPari))

//reduce comprime l'array in un solo valore, sommandoli tutti
</script>


<script id="jsbin-source-javascript" type="text/javascript">var sam = [1, 2, 3, 4, 5, 7, 7, 3, 9, 190, 15];
var saluti = ['ciao', 'buongiorno'];

function sum (acc, val){
  return acc+val
}

function isPari(elem) {
  if (elem%5==0 || elem==7){
      return true;
    }
    return false
}
//console.log ('somma= '+sam.reduce(sum))
console.log (sam.filter(isPari))

//reduce comprime l'array in un solo valore, sommandoli tutti</script></body>
</html>