Question

Is there a way to determine from JavaScript if a page contains a scriptmanager, an updatepanel or if the __doPostBack is called from an update panel or is a partialpostback?

Answer 1

When one update panel is called, then there are two functions that trigger from javascript side. Inside this functions you can also get the Ids of the panel that trigger this update. If there is a full post back outside of an update panel, then you need to capture the submit of the form.

Here are the code that triggered when an update panel is going to upadte, together with the functions that show the update panel ids that make the trigger.

<script>

    if(window.Sys && Sys.WebForms && Sys.WebForms.PageRequestManager)
    {
      var prm = Sys.WebForms.PageRequestManager.getInstance();

       prm.add_initializeRequest(InitializeRequest);
       prm.add_endRequest(EndRequest);
    }
    else
    {
      // no ScriptManager found
    }        

      function InitializeRequest(sender, args) 
      {     
         // get the array of update panels id
         var UpdPanelsIds = args.get_updatePanelsToUpdate();
         // get the Post ID
         args.get_postBackElement().id;
      }

      function EndRequest(sender, args) {
      }
</script>

‘Dan Davies Brackett’ Correct describe how you can know if the ScriptManager exist.