how to pass value in varaiable to jquery from handlers

Imports System.Web
Imports System.Web.Services
Imports System.Data.SqlClient
Imports System.Net.Mail

Public Class NewsLetter_Handler
    Implements System.Web.IHttpHandler

    Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
        context.Response.AddHeader("Pragma", "no-cache")
        context.Response.AddHeader("Cache-Control", "private, no-cache")
        Debug.WriteLine("Process")
        NewsletterSubmit(context)


    End Sub

    ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property
    ' Handle request based on method
    Private Sub HandleMethod(ByVal context As HttpContext)
        Select Case context.Request.HttpMethod
            Case "HEAD", "GET"
                Exit Select

            Case "POST", "PUT"
                NewsletterSubmit(context)
                Debug.WriteLine("post")
                Exit Select

            Case "DELETE"

                Exit Select

            Case "OPTIONS"

                Exit Select
            Case Else

                context.Response.ClearHeaders()
                context.Response.StatusCode = 405
                Exit Select
        End Select
    End Sub
    Public Sub NewsletterSubmit(ByVal context As HttpContext)
        Debug.WriteLine("submit")

        Dim Name1 As String = context.Request.Params("Name")
        Dim email1 As String = context.Request.Params("Email")
        
        Dim HomePageUrl As String = "default.aspx"
        Dim validationCode As Integer = New Random().[Next]()
        Dim returnValue As Integer = Newsletter_DatabaseHelper.AddNewSubscriber(Name1, email1, validationCode)
        If returnValue = 1 Then
            Try
                Newsletter_Util.SendValidationEmail(email1, validationCode)
'message.Text = "Thank you for making a point by subscribing. An confirmation email has been sent to you. To validate your subscription, please click on the given link. "
            Catch ex As Exception
             
                'message.Text = "Your email address has been added to our database but the validation email to confirm your address could not be sent at this time. Please <a target='_blank' href=""" & "ValidateEmail.aspx?email=" & Server.UrlEncode(email_1) & " "">click here</a> to resend the validation email."
            End Try
        ElseIf returnValue = 0 Then
           
          message.Text = "Your validated email address is already in our database. <br/>There is no need to subscribe again."
        ElseIf returnValue = -1 Then
      
        message.Text = "Your email address is already in our database but it has not yet been validated. If you would like to receive the validation link again then <a target='_blank' href=""ValidateEmail" & ".aspx?email=" & Server.UrlEncode(email_1) & """>click here</a>."
        End If


    End Sub

  End Class

i want to pass this message text to jquery n display to particular variable