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css/javascript visibility visable/hidden is very slow on Blackberry

Answer 1

A:

If you change the layout you'll get redraw. If a single redraw is slow then you're layout is too heavy for a mobile application i guess.

galambalazs 2010-09-29 19:42:20

layout is fairly heavy, but I am using ajax to compensate.

robert 2010-09-29 19:44:25

ajax is about network efficiency not rendering. You can't compensate a heavy layout with ajax.

galambalazs 2010-09-29 20:31:40

ajax techniques permit developers to build heavy layout (by which I mean, many functionson a page and several hundred lines of html/js) while at the same time having nibleperformance by using ajax to replace only small amounts of html at a time on the page.

robert 2010-09-29 20:37:51

Answer 2

A:

This should help:

http://dev.opera.com/articles/view/efficient-javascript/?page=3

cheers

Marko 2010-09-29 19:49:05

Answer 3

A:

Is document.getElementById("spinner2").style.display = "block" any better? You would have to start with display: none on the spinner element, and you would need to put it in a fixed box (div) to keep it from re-flowing the layout.

Ishmael 2010-09-29 20:02:54

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css/javascript visibility visable/hidden is very slow on Blackberry

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