Re: [tlug] My first JSON object

[Fredric Fredricson <Fredric.Fredricson@example.com>]

Dave M G wrote:
> Darren, Godwin, Simon, Fredric, TLUG,
>
> Thank you for the advice.
>
> I'm sold on the idea that I should use JQuery to handle all the fine 
> print of JSON handling. However, I'm just a little fuzzy on how to use 
> JQuery for this.
> Most of the examples I've looked at on the web use an additional 
> Javascript file called json2.js, available from json.org. This doesn't 
> seem to be a plug in for JQuery, but a separate (?) set of code for 
> working with JSON, but I don't quite get what it does.
> Does JQuery not natively support JSON...?
>   
For the jQuery.ajax (a.k.a. $.ajax) method  you can specify dataType as 
"json". This will make  jQuery parse the reponse as JSON.
If you are serious about jQuery you need to learn to find your way 
around jquery.com and specifically the documentation. The learning curve 
is pretty steep but not that high (at least not if you know the http 
basics). You can find examples there too and some forums.
As far as I understand the idea behind JSON is that you send objects in 
form of javascript code (a subset of javascript) that, when evaluated, 
can be used as an object and dealt with appropriately. I have tried this 
technique a couple of times and while it is probably very efficient it 
is also reputed to have some security flaws.
I decided to go for xml and jQuery can be used as a powerful xml parser 
too (the same way it parses http). Parsing xml is probably less 
efficient but we are talking user interfaces (browsers) so a few 
milliseconds will not matter. I have other reasons for using xml but I 
think I would use xml regardless of those. I am however sure others have 
other preferences.
/Fredric


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