The name property returns the name of the window. This property contains the name specified when new windows are created using the Window.open() method.
<html>
<head>
<script language="JavaScript">
<!--
function openWin(){
var myBars = 'directories=no,location=no,menubar=no,status=no';
myBars += ',titlebar=no,toolbar=no';
var myOptions = 'scrollbars=no,width=400,height=200,resizeable=no';
var myFeatures = myBars + ',' + myOptions;
var newWin = open('', 'myDoc', myFeatures);
newWin.document.writeln('This window\'s name is: ' + newWin.name + '<br>');
newWin.document.writeln('<form>');
newWin.document.writeln('<input type=BUTTON value="Close"');
newWin.document.writeln(' onClick="window.close()">');
newWin.document.writeln('</form>');
newWin.document.close();
}
-->
</script>
</head>
<body>
<form>
<input type=BUTTON value="Open" onClick="openWin()">
</form>
</body>
</html>