For anyone coming to this thread later, there's now a (rough) how-to
on the unofficial wiki:
http://proto-scripty.wikidot.com/prototype:how-to-load-scripts-dynamically
-- T.J. :-)
On Oct 16, 11:11 am, "T.J. Crowder" <[EMAIL PROTECTED]> wrote:
> Hey Jason,
>
> [Call me T.J. :-)]
>
> Caveat: I have not had to do this in the wild, so there are sure to
> be better answers from others. I'll throw out an example that works
> in my limited testing (FF3, IE6, Safari 3, Opera 9):
>
> Loading the script dynamically from the statically-loaded script
> already on the page (in my example file I triggered this vi a button):
> * * *
> function go()
> {
> var head;
> var script;
>
> head = $$('head')[0];
> if (head)
> {
> script = new Element('script', { type: 'text/javascript', src:
> 'dynamic.js' });
> head.appendChild(script);
> }}
>
> * * *
>
> A function in the statically-loaded script that other scripts can use
> to announce themselves:
> * * *
> function hello(name)
> {
> alert('Script "' + name + '" loaded');}
>
> * * *
>
> My dynamic.js file:
> * * *
> hello('dynamic');
> function coolness()
> {
> alert('Coolness!');}
>
> * * * *
>
> A modified version of hello() demonstrating that the dynamically-
> loaded script is accessible from the statically-loaded one:
> * * * *
> function hello(name)
> {
> alert('Script "' + name + '" loaded');
> if (name == 'dynamic')
> {
> coolness();
> }}
>
> * * * *
>
> Complete code on Pastie:
> HTML+static script:http://pastie.org/293753
> dynamic.js:http://pastie.org/293754
>
> Again, though, I wouldn't be at all surprised if there are subtlties
> and wrinkles that aren't dreamt of in my philosophy -- or at least not
> handled in this code. :-)
> --
> T.J. Crowder
> tj / crowder software / com
>
> On Oct 16, 10:54 am, "jason maina" <[EMAIL PROTECTED]> wrote:
>
> > @Crowder:
> > This kind of amateurish, how will the script announce itself?
> > Kind of don't understand the concept
>
> > 2008/10/16 T.J. Crowder <[EMAIL PROTECTED]>
>
> > > > When the "script" element is inserted into the document body, does the
> > > > currently-running script wait for the js file to be downloaded and
> > > executed?
>
> > > You'll want to try it out on the browsers you're targeting, but I tend
> > > to doubt it: All the code inserting the tag is doing is inserting the
> > > script element in the DOM, the browser does the rest and I'm guessing
> > > does it on its own thread(s). Probably best to have the script you're
> > > loading announce itself to the script loading it when it loads. Then
> > > you know it's there.
> > > --
> > > T.J. Crowder
> > > tj / crowder software / com
>
> > > On Oct 15, 8:08 pm, "Hector Virgen" <[EMAIL PROTECTED]> wrote:
> > > > When the "script" element is inserted into the document body, does the
> > > > currently-running script wait for the js file to be downloaded and
> > > executed?
> > > > Or does the js file download in the background while the current script
> > > > finishes?
> > > > -Hector
>
> > > > 2008/10/15 buda <[EMAIL PROTECTED]>
>
> > > > > tere is a beautifull script ENSURE - try it
>
> > > > > On 15 окт, 14:16, "jason maina" <[EMAIL PROTECTED]> wrote:
> > > > > > Hi,
>
> > > > > > Is it possible to load script files only when they are needed.
> > > > > > In the application im currently making there are too many script(js)
> > > > > files
> > > > > > loaded on the parent page yet in the entire life-cycle of the
> > > application
> > > > > > usage some tabs will not even be clicked hence the idea to only load
> > > > > script
> > > > > > files when needed.
>
> > > > > > Thank you in advance.
>
> > > > > > - Jason
>
> > > > --
> > > > -Hector
>
>
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