[Javascript] Show and hide multiple div tags

[Cutter (JS Related)]

Triche,

Great explanation. Took me a long time to figure that out the first time 
I saw it (many moons ago). Thanks for putting that out there so clearly, 
very well done.

Cutter

Triche Osborne wrote:
> Abyss - Information wrote:
>> Yes I understand that.
>>
>> I was just wondering (to which i will yahoo a ternary statement in a 
>> minute)
>>
>> why and how does it work with the? and the :
>>
> The question mark is the ternary operator. Just as an equal sign (the 
> assignment operator) is parsed by the interpreter as "store this piece 
> of data at a place designated by this name," the question mark is 
> intepreted as "if the statement that preceeds this question mark . . ." 
> The question mark is always immediately followed by the true condition. 
> The colon is the "else" and is always followed by the false branch.
> 
> If you could see it as the interpreter does, it would be something like 
> this:
> 
> (1) var2 = var ? 'this' : 'that';
>                ^ if var is
> 
> (2) var2 = var ? 'this' : 'that';
>                    ^ TRUE, this
> 
> (3) var2 = var ? 'this' : 'that';
>                         ^ else
> 
> (4) var2 = var ? 'this' : 'that';
>                             ^ else FALSE, then this
> 
> (5) var2 = var ? 'this' : 'that';
>       ^ assign results to var2
> 
> 
>     As for the origins, I believe it comes from C, as do a number of 
> constructs in both JavaScript and PHP. (PHP supports ternary form as 
> well.) It's interesting to note that it isn't considered a complete 
> statement in itself. The following isn't complete:
> 
> ( var ) ? 'this' : 'that';
> 
> If must be used as part of a complete statement such as this one:
> 
> var2 = (var) ? 'this' : 'that';
> 
> The returned value must be assigned to something or used in some manner. 
> Is this more what you were looking for?
> 
> Triche
> 
>     
> 
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Cutter
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