See https://groups.google.com/d/msg/firebug/3kdqyldV4VY/73qNT3AnjWYJ.
Sebastian
On Monday, March 18, 2013 5:34:37 PM UTC-5, bucephalus org wrote:
>
> Hi there!
>
> My function isArray(x) evaluates different results in Firefox (version
> 15.0.1, Firefox for Linux Mint, mint - 1.0) and Firebug (version 1.10.6).
> In particular, isArray([2,4,6]) returns true in Firefox but false in
> Firebug.
>
> More detailed, I have the following HTML file
>
> <!DOCTYPE html>
> <html>
> <head>
> <meta http-equiv="content-type" content="text/html" charset="ISO-8859-1">
> <script type="text/javascript">
> function isArray(x) { return (x.constructor && x.constructor ===
> Array); }
> </script>
> </head>
> <body>
> <script>
> document.write(isArray([2,4,6]));
> </script>
> </body>
> </html>
>
> When I load this in Firefox, it shows
> true
> as expected.
>
> But when I open the Firebug console and I enter
> isArray([2,4,6])
> the answer is
> false
>
> This is even more strange, as the input of
> [2,4,6].constructor && [2,4,6].constructor === Array
> returns
> true
>
> What is going on?
>
> Thank you in advance,
> Cheers, Thomas
>
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