Calling a abap method in a javascript

Question

Hi all,
I've been browsing a bit through this forum, but there has no answer been completely covering my problem...
I would like to call an abap method in the javascript in order to check some values...
This is what I have done:
<script language="JavaScript" defer="defer">
    function do_checks(htmlbevent)
        try
              var doubles = "<%= controller->check_doubles( )%>";
              if(doubles == true){
                  var Check = confirm("Test??");
                  if(Check == false){
                    htmlbevent.cancelSubmit = true;
        catch(e)
  </script>
The method has the following code:
mehod check_doubles. " returning parameter = rv_double of type flag
  rv_double = abap_true.
endmethod.
the button is defined like this...
<htmlb:button
                          id      = "Save"
                          onClick = "save"
                          onClientClick = "do_checks(htmlbevent);"
                          text    = "<%= otr(crm_ic_appl/Save) %>"
                          />
The funny thing is, that the controller->check_doubles( ). is already processed at load of the page (although there is no on_load used somewhere...
If I leave out the " if(doubles == true){ } ", the javascript reacts as foreseen..., but when I keep the " if(doubles == true){ } ", the javascript doesn't go through the method anymore...
Can anybody help me out here???
Thanks!!
Micha

Answer 1

Hi,
You can call them FM inside the javascript something like below...
<script language="JavaScript">
function yourFM()
<%
   DATA: guid TYPE GUID_32.
   CALL FUNCTION 'GUID_CREATE' IMPORTING ev_guid_32 = guid.
%>
</script>
<b>To call the class & method:</b>
<script language="JavaScript">
    function yourFM()
      <% CLASS cl_bsp_login_application DEFINITION LOAD. %>
      var EXIT_URL  = "<%= CL_BSP_LOGIN_APPLICATION=>GET_SESSIONEXIT_URL( page = page ) %>";
  </script>
But i am not clear what do you want to achieve. I didnt understand what you are trying to do with you code. Could you give more detail?
<i>* Reward each useful answer</i>
Raja T
Message was edited by:
        Raja Thangamani