Prototype succ() Method

Syntax:

string.sub(pattern, replacement[, count = 1]);

Return Value:

Returns a string.

Example:

<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript" 
   src="/javascript/prototype.js">
</script>
<script>

function showResult(){
   var str = "a";
   alert("a.succ : " + str.succ() );
   var str = "aaaa";
   alert("aaaa.succ : " + str.succ() );
   var str = "abcd";
   alert("abcd.succ : " + str.succ() );

}

</script>
</head>

<body>

  <p>Click the button to see the result.</p>
  <br />
  <br />
  <input type="button" value="Result" onclick="showResult();"/>

</body>
</html>

To understand it in better way you can Try it yourself.