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From: Cezary Tomczyk <cezary.tomczyk@gmail.com>
Newsgroups: comp.lang.javascript
Subject: Re: Simple question about div show or hide
Date: Thu, 10 Jan 2013 21:02:26 +0100
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W dniu 2013-01-10 17:52, Martin Leese pisze:
> Cezary Tomczyk wrote:
>
>> I would write in that way*:
> ...
>> switchView = function(e){
>>     if (b) {
>>         elm.style.display = 'block';
>>     } else {
>>         elm.style.display = 'none';
>>     }
> ...
>>   3) it's better to use 'class' and switch classes instead of inline
>> styles
>
> Why?  Or, more correctly, under what
> conditions is it better?

1. In above example logic ix mixed with presentation, which developer 
should avoid.
2. "Class"-es can contains more styles, not only "display".

+ http://webdesign.about.com/od/css/a/aa073106.htm

-- 
Cezary Tomczyk
http://www.ctomczyk.pl/