I haven't seen Ajax functionality embedded in Struts so I provided the solution
as the classic 5 min q&d solution
I wholeheartedly agree that JavaScript and any '<pseudo>language' that ends
with Script should be avoided at all costs!
Thanks Frank,
M-
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----- Original Message -----
From: "Frank W. Zammetti" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <user@struts.apache.org>
Sent: Wednesday, November 29, 2006 12:49 AM
Subject: Re: Struts, AJAX, JSP, and JavaScript question
> That will only work if the response is nothing but JavaScript, in which
> case your 100% correct (although many people say that eval() should be
> renamed evil() and should be avoided like the plague... I'm not *quite*
> that extreme in my avoidance of it).
>
> As a quick proof:
>
> <html>
> <head>
> <script>
> var s = "";
> // s += "<" + "html" + ">";
> // s += "<" + "head" + ">";
> // s += "<" + "script" + ">";
> s += "alert('test');";
> // s += "<" + "/script" + ">";
> // s += "<" + "/head" + ">";
> // s += "<" + "body" + ">";
> // s += "Hello";
> // s += "<" + "/body" + ">";
> // s += "<" + "/html" + ">";
> function testit() {
> eval(s);
> }
> </script>
> </head>
> <body>
> The Body
> <input type="button" value="testit" onclick="testit();">
> </body>
> </html>
>
> Load this file in your browser and you'll find that you get an alert, as
> expected... now, uncomment the commented lines and reload and you'll see
> that it no longer pops the alert (interestingly, in IE I get a syntax
> error, because it's trying to interpret the markup as script, but in FF
> it just quietly doesn't work, not even a notice in Firebug).
>
> So, if the idea is to execute script blocks that are part of an HTML
> response, a simple eval() won't work... but if all your returning is
> script, then I definitely echo Chris' suggestion and would go with
> eval() (regardless of who wants to slap your hand with a ruler).
>
> Frank
>
>
> Chris Pratt wrote:
>> Or you could just call eval(ajax.responseText).
>> (*Chris*)
>>
>> On 11/28/06, Frank W. Zammetti <[EMAIL PROTECTED]> wrote:
>>>
>>> Hi Adam,
>>>
>>> If your doing straight AJAX yourself, i.e., directly interacting with the
>>> XMLHttpRequest object, this won't execute script for you automatically.
>>> In fact, it won't do much of anything for you automatially, aside from
>>> parsing XML if that's your return type. Otherwise, it's just text to the
>>> object and you'll have to execute scripts yourself.
>>>
>>> Another poster gave you some info if your using S2, but I'm guessing by
>>> your description your using S1. In that case, continue reading! :)
>>>
>>> The AjaxParts Taglib (APT) in Java Web Parts (JWP) takes care of this for
>>> you... you can certainly switch over to using APT, but if you just want
>>> some code to execute scripts, take a look here:
>>>
>>>
>>> http://javawebparts.cvs.sourceforge.net/javawebparts/javawebparts/WEB-INF/src/javawebparts/ajaxparts/taglib/resources/AjaxPartsTaglib.js?view=markup
>>>
>>>
>>>
>>> Down around line 313 you'll find the execScripts() function... simply
>>> yank
>>> that out and use it on the responseText from XMLHttpRequest and you'll be
>>> good to go.
>>>
>>> If you are interested in looking at APT, here's a link:
>>>
>>>
>>> http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html
>>>
>>>
>>>
>>> And for JWP in general:
>>>
>>> http://javawebparts.sourceforge.net
>>>
>>> Hth,
>>> Frank
>>>
>>>
>>> --
>>> Frank W. Zammetti
>>> Founder and Chief Software Architect
>>> Omnytex Technologies
>>> http://www.omnytex.com
>>> AIM/Yahoo: fzammetti
>>> MSN: [EMAIL PROTECTED]
>>> Author of "Practical Ajax Projects With Java Technology"
>>> (2006, Apress, ISBN 1-59059-695-1)
>>> Java Web Parts - http://javawebparts.sourceforge.net
>>> Supplying the wheel, so you don't have to reinvent it!
>>>
>>> On Tue, November 28, 2006 3:43 pm, Adam Gordon wrote:
>>> > I have a JSP and there's a link in the rendered page that makes an AJAX
>>> > call
>>> > (to a Struts action) when clicked. The results of that action, and the
>>> > contents of the response are set as the innerHTML on a hidden <div>
>>> > defined
>>> > inside the afore mentioned rendered page. The <div> is then un-hid.
>>> >
>>> > Everything is working correctly except for one part: When the div is
>>> > displayed, the JavaScript code in the contents returned by the AJAX
>>> call
>>> > isn't being executed and thus, the contents of the <div> aren't set up
>>> > correctly.
>>> >
>>> > Does anyone know a way to have the JavaScript be executed? Or force
>>> the
>>> > browser to execute it?
>>> >
>>> > I used to have an <iframe> and everything worked great, but there was a
>>> > bad
>>> > side effect with session timeouts and so we've decided to not use them.
>>> >
>>> > Any help would be appreciated. Thanks.
>>> >
>>> > -Adam
>>> >
>>> >
>>>
>>>
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>>>
>>>
>>
>
> --
> Frank W. Zammetti
> Founder and Chief Software Architect
> Omnytex Technologies
> http://www.omnytex.com
> AIM/Yahoo: fzammetti
> MSN: [EMAIL PROTECTED]
> Author of "Practical Ajax Projects With Java Technology"
> (2006, Apress, ISBN 1-59059-695-1)
> Java Web Parts - http://javawebparts.sourceforge.net
> Supplying the wheel, so you don't have to reinvent it!
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
