Puoi farti un oggetto che gestica le liste.

Ti do' un esempio (da completare)

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
</head>
<script language="JavaScript" type="text/javascript">
<!--
function List() {
 this.elements = new Array();
 this.ind      = -1;
 this.curSep   = ";";
 this.type     = 'list';
 //
 this.addElement    = _addElement;
 //this.removeElement = _removeElement;
 this.push          = _push;
 this.pop           = _pop;
 this.asString      = _asString;
 this.separator     = _separator;
 this.listLength    = _length;
 this.reset         = _reset;
 this.next          = _next;
 this.setList       = _setList;
} // function List()

function _addElement(anElement,position) {
 if (position == null) {
  this.push(anElement);
 }
} // function _addElement(anElement)

function _reset() {
 this.ind = -1;
} // function reset()

function _next() {
 this.ind++;
 if (this.ind > this.listLength-1) {
  return null;
 } // if (this.ind >= this.length)
 return this.elements[this.ind];
} // function next()

function _push(anElement) {
 this.elements.push(anElement);
} // function push(anElement)

function _pop(anElement) {
 return this.elements.pop();
} // function push(anElement)

function _asString() {
 return this.elements.toString();
} // function _asString()

function _separator(aSep) {
 this.curSep = aSep;
} // function _separator(aSep)

function _length() {
 return this.elements.length;
} // function _length()

function _setList(aString,aSep) {
 if (aSep == null) {
  sep = this.curSep;
 } else {
  sep = aSep;
 } // if (aSep == null)
 this.curSep   = sep;
 this.elements = aString.split(sep);
} // function _setList(aString,aSep)

//-->
</script>
<body>
<script language="JavaScript" type="text/javascript">
<!--
a = new List();
a.setList("a;b;c;d;e;f;g;h;i");
a.reset();
b = a.next();
while (b != null) {
 document.write(b);
 b = a.next();
}
document.write("
");
document.write(a.asString());
document.write("
");
//
a.push('k');
document.write("
");
document.write(a.asString());
document.write("
");

while (a.listLength() != 0) {
 a.pop();
 document.write(a.asString());
 document.write("
");
}

//-->
</script>

</body>
</html>