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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...Inject javascript to onload event of body element - DNN 4.3.2Inject javascript to onload event of body element - DNN 4.3.2
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7/11/2006 5:33 PM
 
Claudiu Farcas

www.friendsoftware.ro
Joined: 6/16/2004
Posts: 39

Hi.
In my custom module i try to inject some code into onload event of body element
Like this: 

'inject JS call into body load
Dim mbody As HtmlGenericControl = CType(Page.FindControl("body"), HtmlGenericControl)
If Null.IsNull(mbody.Attributes("onload")) Then
   mbody.Attributes.Add("onload", strInit)
Else
   mbody.Attributes("onload") += strInit
End If

where

strInit is somethig like:   ";" & command & ";"
   strInit = ";" & command & ";"

In DNN 4.3.2 RC
onload event is not processed at all.. and with a simple "View source code" command from Internet Explorer
You can see it is not there.

Am i wrong somewhere ?

Hope we will have a fix pretty soon
That's only in DNN 4.3.2

Also reported on support page http://support.dotnetnuke.com/Default.aspx?p=23&i=3603
Best regards,
Claudiu
Claudiu Farcas

FRIEND SOFTWARE
FRIEND SOFTWARE - business solutions for you ...
 
New Post
7/12/2006 9:58 AM
 
Claudiu Farcas

www.friendsoftware.ro
Joined: 6/16/2004
Posts: 39

OK
New CORRECTION:

the onload event is write into the BODY..
but is never processed
Why?

Now i will try to make some comparisions between DNN 3.3.x and DNN 4.3.x

Regards,

Claudiu Farcas

FRIEND SOFTWARE
FRIEND SOFTWARE - business solutions for you ...
 
New Post
7/12/2006 11:04 AM
 
Claudiu Farcas

www.friendsoftware.ro
Joined: 6/16/2004
Posts: 39
Well

At least there is an WORKAROUND:

istead injecting in that way we can use ClientAPI functions

If DotNetNuke.UI.Utilities.ClientAPI.ClientAPIDisabled = False Then 
   DotNetNuke.UI.Utilities.ClientAPI.RegisterClientReference(Me.Page, _
      DotNetNuke.UI.Utilities.ClientAPI.ClientNamespaceReferences.dnn)
   UI.Utilities.DNNClientAPI.AddBodyOnloadEventHandler(Me.Page, strInit)
Endif

Courious .. first way works only in DNN 3.3.x (and older releases) but not DNN 4.3.x

Anyone any hints ?

Claudiu Farcas

FRIEND SOFTWARE
FRIEND SOFTWARE - business solutions for you ...
 
New Post
7/12/2006 8:12 PM
 
Erik van Ballegoij


Erik van Ballegoij's Avatar

erikvanballegoij.com
Joined: 4/7/2004
Posts: 4445

Claudiu.

Injecting onload events the regular way might cause problems with dnn, thats why the clientapi is there for. If you use the clientapi method, it will work in all dnn 3+ versions...

The issue is that many modules can add onload handlers, the client api methods will make sure all handlers are called appropiately.. whereas if you do it like in your first method, you might override other modules trying the same (in the wrong way...)

cheers,

Erik

Erik van Ballegoij, Former DNN Corp. Employee and DNN Expert

DNN Blog | Twitter: @erikvb | LinkedIn: Erik van Ballegoij on LinkedIn
 
New Post
7/13/2006 1:01 AM
 
Claudiu Farcas

www.friendsoftware.ro
Joined: 6/16/2004
Posts: 39
Hi Eric.

Indeed, using ClientAPI way we create a "standardised" way for handling onload events (or other events).
But also the first piece of code is handling the overriding case in the "standard asp.net".

The onload event is there .. in the source of page .. so it is rendered right.
The only issue i see here is that this onload event is never fired.
And that's only in DNN 4.3.x verions.

In any ASP.NET application onload event should work just fine.
Even the first method of injection seems too oldish i think it should work at least for legacy code compatibility.

Regards,
Claudiu Farcas

FRIEND SOFTWARE
FRIEND SOFTWARE - business solutions for you ...
 
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