Comments on: JavaScript/CSS Font Detector

By: Charley Segalla

Charley Segalla — Fri, 05 Mar 2010 01:41:19 +0000

Hi, I came across this article while searching for help with JavaScript. I’ve recently changed browsers from Safari to Microsoft IE 6. Now I seem to have a problem with loading JavaScript. Every time I browse page that needs Javascript, the page freezes and I get a “runtime error javascript.JSException: Unknown name”. I cannot seem to find out how to fix it. Any help is very appreciated! Thanks

By: Woodrow

Woodrow — Fri, 12 Feb 2010 13:37:28 +0000

great … (-.-’ )

I was talking about this line:

if (font == “serif”)

By: Woodrow

Woodrow — Fri, 12 Feb 2010 13:36:20 +0000

Great stuff! But:

the detector faultily detects that “Times New Roman” is not installed. This is because you use “serif” as a comparison-font (which is basically the same as TNR) but only check for one of these two fonts here:
<>

Based on the comment that can be found there (”to set arial and sans-serif true”) I bet that a) you used “Arial” as a comparison-font for some time and b) you had the same issue then as well. So I guess you know what I mean ;^)

By: Emlyn

Emlyn — Thu, 14 Jan 2010 18:16:43 +0000

OS X 10.5 using FF 3.5.7 and all testing works fine (including Calibri).

Great temp fix until CSS3 is in play–tx.

By: _asterix_

_asterix_ — Mon, 23 Nov 2009 19:49:50 +0000

Wow! This is a gerat Solution. Thank you very much.

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By: Mark

Mark — Mon, 14 Sep 2009 16:44:20 +0000

I have looked in to your script as I have built me own script sort of like this but less complex.

Your script doesn’t detect (accurately) if Calibri is in fact installed. It always evalutates as false (Windows Vista Business Edition IE 6, 7, UNLESS you campare it using Arial. Then it will return it more accurately. Is there a good reason why you used “sans”?

I found that it is only an issue with IE (most of the market share).

Let me know what you think.

By: Jean-Sebastien Dussault

Jean-Sebastien Dussault — Tue, 08 Sep 2009 17:43:43 +0000

Had trouble making the dowloadable script work in IE (8) as it was returning a false negative. The script embedded on this page worked fine, though, so I had a look at the difference.

The downloadable version was using “sans” as a comparator, even if the comments following it said “serif font used as a comparator”. Changed it to serif, and everything was A-OK.

BTW, the version using “sans” worked fine under FF 3.5.3.