Hi,
I've tried the example. It works +1
So we can use document.createElement("script") for [3] and [4]
regards alex
2009/5/8 Ganesh <gan...@j4fry.org>
> It does work (even cross-browser). Try this:
>
> *<html>
> <body>
> <input type="submit" value="test" id="test">
> <script>//<!--
> var scriptTag = document.createElement("script");
> scriptTag.src="test.js";
> var item = document.getElementById('test');
> item.parentNode.insertBefore(scriptTag, item);
> //-->
> </script>
> </body>
> </html>
>
> with test.js having one line:
> alert('test');
>
> It's the DOM action that triggers the script execution.
>
> Best regards,
> Ganesh
> *
> Alexander Bell schrieb:
>
>> Hi,
>>
>> I don't understand the solution for [3].
>> I've got for instance the following tag on my page: <script
>> type="text/javascript" src="http://my.source.com/myscript.js"; />.
>> So we have to execute all the script code inside that file. Does this work
>> with document.createElement("script")?
>> Because this only create a DOM element but I'm not sure that the
>> script-code is executed (especially in IE 5-6).
>>
>> regards alex
>>
>> 2009/5/8 Ganesh <gan...@j4fry.org <mailto:gan...@j4fry.org>>
>>
>>
>> Hi,
>>
>> There are four kinds of script constructs I can image may becoming
>> pulled in through an ajax request:
>>
>> [1] component does startElement("script", component) ...
>> endElement("script")
>> [2] XHTML markup contains <script type="text/javascript"> ...
>> </script> (or component writes this directly to the stream)
>> [3] markup contains <h:outputSrcipt>
>> [4] markup contains <script src=...>
>>
>> IMHO only [1] qualifies to be included in the <eval> section of
>> the AJAX response by the PartialResponseWriter. Execution on the
>> Javascript side can happen with
>> window.execScript(theActualScriptContent) like Matthias proposed.
>> Matthias, can you explain the advantages of this?
>>
>> [2] should be recognized by our embedded Javascript runScripts
>> function which in fact also does window.execScript. Werner, I
>> think we agree on this. Everything else would cause parsing of the
>> XHTML markup.
>>
>> For [3] Werners document.createElement("script") approach can be
>> suitable though I'm not sure how you want to send this down to the
>> browser. Are you planning to run on the <extension> tag in the
>> ajax XMLSchema?
>>
>> Werner, your example for document.createElement("script") was
>> based on case [4]. But how do you want to do this? Are you
>> planning to parse all the markup for script tags with src
>> attributes? Maybe here an extension to our embedded Javascript
>> runScripts function could make sense? This could also solve [3]!
>>
>> Best regards,
>> Ganesh
>>
>> Werner Punz schrieb:
>>
>> Yes but then I have to fetch the script via xhr...
>> which means more code on the javascript side of things!
>>
>>
>>
>> Werner
>>
>>
>>
>> Matthias Wessendorf schrieb:
>>
>> isn't it better to do this in IE:
>> window.execScript(theActualScriptContent);
>>
>> and in FF and other this:
>> window.eval(theActualScriptContent);
>>
>> -Matthias
>>
>> ---------- Forwarded message ----------
>> From: Werner Punz <werner.p...@gmail.com
>> <mailto:werner.p...@gmail.com>>
>> Date: Fri, May 8, 2009 at 4:54 PM
>> Subject: Re: MyFaces 2.0 PartialResponseWriter + EVALs
>> To: dev@myfaces.apache.org <mailto:dev@myfaces.apache.org>
>>
>>
>> Werner Punz schrieb:
>>
>> Hello everyone:
>>
>> I checked what has been done on the Partial Response
>> Writer for the Rendering. It is very basic, so I would
>> propose following enhancement.
>>
>> Since we need separate eval blocks for javascripts, we
>> implement a PartialResponseWriterImpl which fetches
>> the scripts
>> from components and later allows those scripts to be
>> pushed into the eval part of the partial response.
>>
>> There is a reason for that.
>>
>> Although we have embedded javascript parsing in our
>> javascripts I would see that as optional feature for
>> badly behaving component sets.
>>
>> The normal way for a component writer still is:
>> a) startElement("tagName", component)
>> b) writeAttribute...
>>
>> write
>>
>> c) endElement
>>
>> The way Trinidad and others did it was simply to check
>> for scripts at startElement and push them into a
>> separate eval datastructure later to be processed (in
>> our case after the update part of the p
>> PartialResponse a separate eval stage has to be added)
>>
>> I would start to work on this issue if it is ok with
>> anyone...
>> The entire functionality should be put into our
>> PartialResponseWriterImpl not into the API, and will
>> be hooked into
>>
>> processPartial of PartialViewContextImpl
>>
>> I am not sure how to deal with script src="..." on the
>> protocol and javascript level.
>>
>> Werner
>>
>>
>>
>>
>> Ok here is my idea regarding sript src="....
>>
>> I would transform that on the server side to a small
>> javascript ala
>> var scriptTag = document.createElement("script");
>> scriptTag.src="<src>"; document.body.append(scriptTag);
>> since the eval is executed after the rendering is done,
>> this should be
>> even safe on IE6!
>>
>> That also would still mean that the update CDATA block is just
>> javascript only without any preprocessing which then can
>> be pushed
>> straight into the eval function!
>>
>>
>> Werner
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Mit freundlichen Grüßen / Kind regards
>> Alexander Bell
>>
>> J4Fry OpenSource Community
>> Internet: http://www.j4fry.org
>> E-Mail: alexander.b...@j4fry.org <mailto:alexander.b...@j4fry.org>
>> Webprofil: http://www.j4fry.org/alexanderbell.shtml
>>
>>
--
Mit freundlichen Grüßen / Kind regards
Alexander Bell
J4Fry OpenSource Community
Internet: http://www.j4fry.org
E-Mail: alexander.b...@j4fry.org
Webprofil: http://www.j4fry.org/alexanderbell.shtml
