Untitled

<html>
<head>
<script language="javascript">

var zaporedje=prompt("Vnesi zaporedje");
var zacetekZaporedja=prompt("Vnesi del zaporedja,ki te zanima");
var mesto=zaporedje.indexOf(zacetekZaporedja);
alert(mesto);


</script>

</head>
<body>

<script language="javascript">
<!--
  vnesiZaporedje();
  vnesiDelZaporedja();
 var  zacetekZaporedja;
  indexOf(zacetekZaporedja.value);
// -->
</script>
<body>
</body>
</head>
</html>