<html>
<head>
<title>JavaScript Array indexOf Method</title>
</head>
<body>
<script type="text/javascript">
if (!Array.prototype.indexOf)
{
Array.prototype.indexOf = function(elt /*, from*/)
{
var len = this.length;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
for (; from < len; from++)
{
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
function printBr(element, index, array) {
document.write("<br />[" + index + "] is " + element );
}
var Aindex = ['12', '5', '8', '130', '44'];
index = Aindex.indexOf('130');
Aindex.sort;
document.write("index is : " + index );
document.write("<br />"+Aindex );
</script>
</body>
</html>