Firefox 2.0 – InnerHTML issue

Sorry about the long time between posts. Hope to start posting again soon

 

Anyhow,

 

I was working on a web application that is updating the details of a <map> HTML element using the innerHTML, the new innerHTML value is being processed in the server side using AJAX function

 

I was using the following JavaScript function to do that

 

function jvUpdateImageMap(ImageMapHTML) 

{

    try

    {

          document.getElementById(“MyImageMap”).innerHTML= ImageMapHTML;

           

     }

catch(err)

          {

          }

          finally

          {

          }

}

 

That was working fine for all the browser including Firefox 3.0 but not for Firefox 2.0

 

After debugging this I found that for FireFox 3.0 the result of updating the InnerHTML is this

 

  <map id=”MyImageMap” >

          <area SHAPE=”rect” id=”0_30″ usemap=”MyImageMap” Border=”0″ href=”#” COORDS=”538,420,550,408″ />

 </map>

 

 

This is the correct expected result

 

But for FIreFox 2.0 the result was this

 

<map id=”MyImageMap” >

<map id=”MyImageMap” >

          <area SHAPE=”rect” id=”0_30″ usemap=”MyImageMap” Border=”0″ href=”#” COORDS=”538,420,550,408″ />

</map>

</map>

 

 

So to fix this I had to add those lines to the server side function that generate the new <map> HTML code  

If Context.Request.Browser.Browser = “Firefox” Then

       If Context.Request.Browser.MajorVersion = “2″ Then

               ImageMapHTML = ImageMapHTML.Replace(“<map id=”"MyImageMap”" >”, “”)

                ImageMapHTML = ImageMapHTML.Replace(“</map>”, “”)

        End If

End If

 

Using PageMethods/WebMethods to update Sessions variable

I created functions for updateing/reading sessions variables using PageMthods and WebMethods, I am using VS2005 (VB.NET):

 

Import the web.services library

  Imports System.Web.Services 

 

This is the VB.NET function for setting the session variables

           <WebMethod()> _

Public Shared Function AjaxSetSession(ByVal SessionValue As String)

                    Try

                             HttpContext.Current.Session(“SessionKey”) = SessionValue

                   Catch ex As Exception

 

                   End Try

          End Function

 To access the session we need to use HttpContext.Current.Session

 

This is the VB.NET function for getting the session variables

       <WebMethod()> _

          Public Shared Function AjaxGetSession() As String

                    Try

                             AjaxGetSession = HttpContext.Current.Session(“SessionKey”)

                    Catch ex As Exception

                             AjaxGetSession = “Error”

                    End Try

    End Function

 

This is the JavaScript Code to set the session variable

 

PageMethods.AjaxSetSession(“PageMethods”,”WebMethods”)

This the JavaScript Code to read the Session Variables

 

PageMethods.AjaxGetSession(JSGetSessionSucess,JSGetSessionFaild);

 

JSGetSessionSucess is a JavaScript function that would be executed if the AjaxGetSession succeeded

 

       function JSGetSessionSucess(value, methodName)

      {

               try

              {

                        alert(value);

                }

catch(err)

               {

               }

               finally

               {

              }

      }

 

JSGetSessionFaild is a JavaScript function that would be executed if the AjaxGetSession failed

        function JSGetSessionFaild (ex, methodName)

      {

               try

              {

                        alert(ex.get_exceptionType());

                }

catch(err)

               {

               }

               finally

               {

              }

      }