Look at the following post I created describing how you can serialise global and local resources and retrieve them from javascript using jQuery and JSON.

http://bloggingdotnet.blogspot.com/2010_02_01_archive.html

Firstly, create a new handler (.ashx) file. This one was written quite some time ago, so uses vb.net and custom JSON serialisation:

Imports System.Web

Imports System.Web.Services

Imports System.Xml

Imports System.Resources

Imports System.Reflection



Public Class Localisation

  Implements System.Web.IHttpHandler



  Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest

    Dim files As String = context.Request.QueryString(files)

    Dim local As String = context.Request.QueryString(local)

    Dim isLocal As Boolean

    Dim folder As String = App_GlobalResources



    context.Response.ContentType = text/javascript



    'Write out file as object

    context.Response.Write({)



    'Determine if local resource file

    If local IsNot Nothing Then

      isLocal = CBool(local)

      If isLocal Then folder = App_LocalResources

    End If

    If files Is Nothing OrElse files.Length = 0 Then Throw New ArgumentException(Parameter 'files' was not provided in querystring.)



    Dim flag As Boolean = False

    For Each file As String In files.Split(,)

      If flag Then context.Response.Write(,)



      Dim className As String = file.Split(.)(0)



      'Write the class (name of the without any extensions) as the object

      context.Response.Write(className)

      context.Response.Write(:{)



      'Open the resx xml file

      Dim filePath As String = context.Server.MapPath(~ & folder &  & file)

      Dim document As New XmlDocument()

      Dim flag2 As Boolean = False

      document.Load(filePath)



      Dim nodes As XmlNodeList = document.SelectNodes(//data)



      For Each node As XmlNode In nodes



        'Write out the comma seperator

        If flag2 Then context.Response.Write(,)



        Dim attr As XmlAttribute = node.Attributes(name)

        Dim resourceKey As String = attr.Value

        context.Response.Write(resourceKey)

        context.Response.Write(:)



        'Write either the local or global value

        If isLocal Then

        context.Response.Write(HttpContext.GetLocalResourceObject(String.Format(~/{0},    file.Replace(.resx, )), resourceKey)) 'Has to be full path to the .aspx page

        Else

          context.Response.Write(HttpContext.GetGlobalResourceObject(className, resourceKey))

        End If

        context.Response.Write()



        'Flag that we need a comma seperator

        flag2 = True

      Next



      context.Response.Write(})

      flag = True

    Next



    'End file

    context.Response.Write(})

  End Sub



  Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable

    Get

      Return True

    End Get

  End Property

End Class

When that is working, use the following jQuery code to make an ajax call to the http handler and return the contents of the resource file as an object literal.

// -- Localisation --

var localResources;

var globalResources;



//Sample JSON for javascript resource values eg {TrackDetail:{HideHelp:Hide Help, ShowHelp:Show Help}}

//Usage e.g: alert(localResources.TrackDetail.HideHelp);



//Load Localisation values into variables so that they can be available on the client

//Note that these values are loaded asynchronously, the code in the function will not run until the call has completed.

$.getJSON('Localisation.ashx?files=TrackDetail.aspx.resx&local=true', function(data) { localResources = data});

$.getJSON('Localisation.ashx?files=Errors.resx,Strings.resx', function(data) { globalResources = data});