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Mininum and Maximum value of Z-INDEX
I see some top z-index in some pages,always 9999,
However is there a top limit about z-index?
Can I set it 9999999?10000000? Or even more greater?
Thank you
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Or http://stackoverflow.com/questions/227738/is-there-an-upper-limit-to-z-index-values-in-web-browsers – jacktheripper Mar 10 '12 at 11:04
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http://softwareas.com/whats-the-maximum-z-index – Malitta N Mar 10 '12 at 11:13
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Well, some one did an experiment long time ago, just for your reference: http://www.puidokas.com/max-z-index/ – vincicat Mar 10 '12 at 13:46
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Taken from here:
Not really, but you might consider the natural limitations of a system, like an int range. I'd probably keep it under 32,767. I've definitely exceeded that in javascript while working on a similar problem, and didn't encounter any problems on the major browsers and platforms that I was concerned about at the time.
In the case of 3rd party ads and overlays, making sure that wmode="transparent" on the flash embed is a common problem along the same lines. Also worth noting that IE has a bug with stacking z-indexes, so if you're not seeing success, make sure you're not hitting your head up against the wall with that one*.
I always like to keep to some kind of convention, and not use arbitrary figures. For example, maybe everything in my css falls between 0 and 10. Maybe dhtml stuff happens in the 100's place values, with a meaningful z-index for any given module.
*Sidenote: The IE bug, to be specific, is that IE considers a new instance of document flow to be a new stacking context for z-index. You need to make sure that your z-indexes aren't being lost in the DOM hierarchy when a child node that would normally be inheriting your z-index is being rendered it's own positioning context.
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