Comments on: Capabilities vs. Quirks: When sniffing is OK

By: Trevor

Trevor — Wed, 11 Apr 2007 23:06:48 +0000

Daniel,

Most of the credit belongs to http://www.javascriptkit.com/javatutors/objdetect3.shtml

By: Daniel Kraaij (DaanK Interworking)

Daniel Kraaij (DaanK Interworking) — Wed, 11 Apr 2007 07:14:28 +0000

very nice Trevor, just the piece of code i was looking for :)

By: Trevor

Trevor — Tue, 10 Apr 2007 23:32:37 +0000

The reason I don’t ever check the user agent string is because it can be spoofed by most browsers. While it’s a lofty ideal to use the same code for every browser, it’s not really realistic if you want your web application to work or look right. But object detection is far superior to user agent detection. You can effectively detect a lot of popular browsers with object detection:

if(document.all && !window.opera) var isIE = true; if(document.all && !document.fireEvent && !window.opera) var isIE5 = true; if(document.all && document.fireEvent && !document.createComment) var isIE55 = true; if(document.compatMode && document.all) var isIE6 = true; if(document.documentElement && typeof document.documentElement.style.maxHeight!="undefined" && !isSafari && !isGecko && !isOpera) var isIE7 = true; if(!document.doctype && !isIE) var isSafari = true; if(window.Iterator) var isGecko181 = true; elseif(Array.every) var isGecko18 = true; elseif(window.getComputedStyle && !window.opera) isGecko17 = true; if(window.opera) var isOpera = true;

By: gonchuki

gonchuki — Tue, 10 Apr 2007 15:10:02 +0000

Anyone using a Gecko-based browser from 2005 is prone to worse bugs than that, i see it ridiculous to support these kind of quirks.

By: Ã«Ã¯

Ã«Ã¯ — Tue, 10 Apr 2007 14:38:59 +0000

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