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 job(mass) {
  var str = ""
  for (var j = 0; j < mass.length; j++) {
    str += mass[j]
  }
  return str
}
var mass1 = ["P", 12, "-", "001", 5, "/", 19]
var myCykl = job(mass1)
myCykl
</script>


<script id="jsbin-source-javascript" type="text/javascript">function job(mass) {
  var str = ""
  for (var j = 0; j < mass.length; j++) {
    str += mass[j]
  }
  return str
}
var mass1 = ["P", 12, "-", "001", 5, "/", 19]
var myCykl = job(mass1)
myCykl


</script></body>
</html>