I can share most of it though the minifier i wrote is not available as its 
part of a package someone paid me to develop....

I can certainly give you the concepts of what needs doing and i am sure you 
can work out the code.

I'll make a pastie of everything that should be done and put the link up 
when its finished

Alex

----- Original Message ----- 
From: "Richard Quadling" <rquadl...@googlemail.com>
To: <prototype-scriptaculous@googlegroups.com>
Sent: Monday, July 20, 2009 4:09 PM
Subject: [Proto-Scripty] Re: Checking if prototype is loaded


>
> 2009/7/20 Alex McAuley <webmas...@thecarmarketplace.com>:
>>
>> The technique i developed is about 5 times faster than the one in the 
>> link
>> you provided and alot less server load!.......
>>
>> However back in 2006 it was good insight from razaak to achieve it that
>> way..
>>
>> Thanks for the info.
>>
>> Alex
>> ----- Original Message -----
>> From: "Richard Quadling" <rquadl...@googlemail.com>
>> To: <prototype-scriptaculous@googlegroups.com>
>> Sent: Monday, July 20, 2009 3:22 PM
>> Subject: [Proto-Scripty] Re: Checking if prototype is loaded
>>
>>
>>>
>>> 2009/7/20 Alex McAuley <webmas...@thecarmarketplace.com>:
>>>>
>>>> With a script that gathers everything first, minifies, checks for gzip
>>>> handling and outputs the appropriate response! ... same with CSS.
>>>>
>>>> When i started looking into speeding pages up using the google "page
>>>> speed"
>>>> add on for firefox i had 7 red x's .... now i have 100% green ticks!
>>>> which
>>>> is thanks to a few hacks i worked out but mainly due to downloading
>>>> everything the page needs in one hit rather than paralell or lazy
>>>> loading!... couple that with caching and you have a lightning web app.
>>>>
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From: "Richard Quadling" <rquadl...@googlemail.com>
>>>> To: <prototype-scriptaculous@googlegroups.com>
>>>> Sent: Monday, July 20, 2009 2:29 PM
>>>> Subject: [Proto-Scripty] Re: Checking if prototype is loaded
>>>>
>>>>
>>>>>
>>>>> 2009/7/20 Alex McAuley <webmas...@thecarmarketplace.com>:
>>>>>>
>>>>>> Yer i dont load it via src="" as it slows the page down 
>>>>>> dramatically!!!
>>>>>> ....
>>>>>>
>>>>>> Contrary to popular belief i have tried and tested external scripts 
>>>>>> and
>>>>>> external css files and due to browsers paralell downloads with YSlow 
>>>>>> i
>>>>>> can
>>>>>> save around 7 seconds on loading a very heavy page full of
>>>>>> prototype,jQuery
>>>>>> some UI stuff and a bunch of CSS!...
>>>>>>
>>>>>> It does seem that it gets evaluated though you are correct, i went 
>>>>>> back
>>>>>> and
>>>>>> checked after finding those bits out and watched page load speed 
>>>>>> before
>>>>>> and
>>>>>> after!.
>>>>>>
>>>>>> Ta
>>>>>>
>>>>>> Alex
>>>>>>
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: "Richard Quadling" <rquadl...@googlemail.com>
>>>>>> To: <prototype-scriptaculous@googlegroups.com>
>>>>>> Sent: Monday, July 20, 2009 12:23 PM
>>>>>> Subject: [Proto-Scripty] Re: Checking if prototype is loaded
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> 2009/7/20 Alex McAuley <webmas...@thecarmarketplace.com>:
>>>>>>>>
>>>>>>>> Just an FYI incase anyone wondered ....
>>>>>>>>
>>>>>>>> It seems (at least in firefox 3x, IE7+, CHrome, Safari (windows))
>>>>>>>> that
>>>>>>>> the
>>>>>>>> browser or "prototype" itself wont load 2 copies of it....
>>>>>>>>
>>>>>>>> To Test i included prototype.js in the <head> and included it again
>>>>>>>> in
>>>>>>>> the
>>>>>>>> body and there was only one output of javascript!....
>>>>>>>>
>>>>>>>> Kudos to the browser vendors or the script devs!!
>>>>>>>>
>>>>>>>> ----- Original Message -----
>>>>>>>> From: "Alex McAuley" <webmas...@thecarmarketplace.com>
>>>>>>>> To: <prototype-scriptaculous@googlegroups.com>
>>>>>>>> Sent: Monday, July 20, 2009 11:12 AM
>>>>>>>> Subject: [Proto-Scripty] Re: Checking if prototype is loaded
>>>>>>>>
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sorry my bad.... was "if(window.Prototype) ..."
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sorry for silly post !!
>>>>>>>>>
>>>>>>>>> Alex
>>>>>>>>> ----- Original Message -----
>>>>>>>>> From: "Jeztah" <webmas...@thecarmarketplace.com>
>>>>>>>>> To: "Prototype & script.aculo.us"
>>>>>>>>> <prototype-scriptaculous@googlegroups.com>
>>>>>>>>> Sent: Monday, July 20, 2009 11:07 AM
>>>>>>>>> Subject: [Proto-Scripty] Checking if prototype is loaded
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Morning guys.
>>>>>>>>>>
>>>>>>>>>> Does anyone know a way to check if prototype is loaded or not 
>>>>>>>>>> ....
>>>>>>>>>>
>>>>>>>>>> I have tried "if(Prototype) { ..." but just throws an undefined
>>>>>>>>>> error.
>>>>>>>>>>
>>>>>>>>>> I know i know i should know if it is loaded or not but my servers
>>>>>>>>>> use
>>>>>>>>>> very heavy aggressive caching due to massive user loads and i
>>>>>>>>>> noticed
>>>>>>>>>> in my cache there was some javascript thats not even on the page
>>>>>>>>>> left
>>>>>>>>>> in a session cache.
>>>>>>>>>>
>>>>>>>>>> To cut it short i use server side methods to gzip/minify js files
>>>>>>>>>> on
>>>>>>>>>> page load (same with the css).... as they are loaded they go into
>>>>>>>>>> an
>>>>>>>>>> array if whats loaded. Then on the page i am able to check the
>>>>>>>>>> "Cache"
>>>>>>>>>> of javascript loaded by checking a session array variable. The
>>>>>>>>>> trouble
>>>>>>>>>> is .... the session variable is rightly telling me prototype is
>>>>>>>>>> (included) - but not in the <head> tag so it is not showing up as 
>>>>>>>>>> a
>>>>>>>>>> loaded script once the page is refreshed!!!....
>>>>>>>>>>
>>>>>>>>>> would it be window.Prototype or is there a cleaner method ?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Thanks in advance
>>>>>>>>>>
>>>>>>>>>> Alex
>>>>>>>>>>
>>>>>>>>>> >
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> >
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> >
>>>>>>>>
>>>>>>>
>>>>>>> I would be careful of your assumptions.
>>>>>>>
>>>>>>> The second copy IS loaded. Hopefully from cache.
>>>>>>>
>>>>>>> You will notice that the very first line of javascript in 
>>>>>>> prototye.js
>>>>>>> is
>>>>>>> ...
>>>>>>>
>>>>>>> var Prototype = {
>>>>>>>
>>>>>>> So, this will overwrite any pre-existing variable called Prototype.
>>>>>>>
>>>>>>> So, the second copy IS executed. As far as I can tell, all of the 
>>>>>>> code
>>>>>>> in prototype.js can quite happily run twice or more without a 
>>>>>>> problem.
>>>>>>>
>>>>>>> I think the issue would come if you had other code loaded between 
>>>>>>> the
>>>>>>> 2 prototypes which you expected to be present. Say a plugin to
>>>>>>> prototype....
>>>>>>>
>>>>>>> <script type="text/javascript" src="/js/prototype.js"></script>
>>>>>>> <script type="text/javascript" 
>>>>>>> src="/js/prototype-plugin.js"></script>
>>>>>>> <script type="text/javascript" src="/js/prototype.js"></script>
>>>>>>>
>>>>>>> If the plugin extends prototype's features in some way, then the
>>>>>>> second load of prototype will effectively reset Prototype back to 
>>>>>>> the
>>>>>>> base version.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> -----
>>>>>>> Richard Quadling
>>>>>>> Zend Certified Engineer :
>>>>>>> http://zend.com/zce.php?c=ZEND002498&r=213474731
>>>>>>> "Standing on the shoulders of some very clever giants!"
>>>>>>> ZOPA : http://uk.zopa.com/member/RQuadling
>>>>>>>
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>> >
>>>>>>
>>>>>
>>>>> How do you load prototype?
>>>>>
>>>>> --
>>>>> -----
>>>>> Richard Quadling
>>>>> Zend Certified Engineer :
>>>>> http://zend.com/zce.php?c=ZEND002498&r=213474731
>>>>> "Standing on the shoulders of some very clever giants!"
>>>>> ZOPA : http://uk.zopa.com/member/RQuadling
>>>>>
>>>>> >
>>>>>
>>>>
>>>>
>>>> >
>>>>
>>>
>>> Ah. I use a slightly modified version of [1] for my js/css compression.
>>>
>>> When you said you don't load via src=, I wasn't thinking very cleverly.
>>>
>>> I don't use minify, but that would certainly help reduce the load on
>>> the line for the first hit and for each cache failure.
>>>
>>> Regards,
>>>
>>> Richard.
>>>
>>>
>>> [1]
>>> http://rakaz.nl/2006/12/make-your-pages-load-faster-by-combining-and-compressing-javascript-and-css-files.html
>>>
>>>
>>> --
>>> -----
>>> Richard Quadling
>>> Zend Certified Engineer : 
>>> http://zend.com/zce.php?c=ZEND002498&r=213474731
>>> "Standing on the shoulders of some very clever giants!"
>>> ZOPA : http://uk.zopa.com/member/RQuadling
>>>
>>> >
>>>
>>
>>
>> >
>>
>
> Any chance of sharing your code?
>
> Just to give some support to razaak, prototype being loaded for every
> single page request was a significant load. In many cases it was the
> biggest load on a single page.
>
> With our intranet and the caching techniques, I can see that it is
> only ever loaded once per new machine/user combination (we have
> hot-desking).
>
> Richard.
>
>
> -- 
> -----
> Richard Quadling
> Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
> "Standing on the shoulders of some very clever giants!"
> ZOPA : http://uk.zopa.com/member/RQuadling
>
> >
> 


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