Should we use IE's CSS Dynamic properties?

Question

I read IE8+ would not support these.

What is the best strategy to handle this?

Firefox just announced another breakthrough "innovation" - support for dynamic properties, except they are using `calc()` instead of `expression()` - http://mzl.la/9f9g7x — Franci Penov, Jun 10 '10 at 20:47

score 2 · Accepted Answer · answered Oct 10 '09 at 13:39

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If you mean CSS expressions, you should avoid them because they're slow.

Your question about how to avoid them is pretty vague. It would be easier to answer a more specific question. But here's a vague answer: Javascript. :)

answered Oct 10 '09 at 13:39

Warren Young

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score 1 · Answer 2 · answered Oct 10 '09 at 16:49

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They are very useful to solve incompatibility problems with older versions of IE, for example to get png transparency in IE6. I always (when needed...) include style-sheets using these functionalities in IE's conditional comments.

answered Oct 10 '09 at 16:49

jeroen

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score 0 · Answer 3 · answered Oct 10 '09 at 13:42

The dynamic properties wasn't anything that really took off. It could be used in applications that targeted IE only (i.e. intranets and such), but as it never became a standard and no other browser supports it, it never came into wide use on the web.

I haven't read what you say about IE8 not supporting dynamic properties, and I haven't tried it, but it sounds very plausible that the will not be supported when the browser renders a page in standards compliant mode. They will probably be supported in quirks mode for a few versions longer.

Should we use IE's CSS Dynamic properties?

3 Answers3