Document parentWindow : document « Javascript Objects « JavaScript DHTML

Document parentWindow

 
    
<html>
<body>
<script language="JavaScript">
    function function1() {
        alert(document.parentWindow.frames.length);
    }
</script>
<input type="button" 
       value="How many frames in this window?" 
       onclick="function1();">
</body>
</html>

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