Is there any way to create text fields based on the javascript variable

gistfile1.txt

in a model popup receiving a variable as question type id as '$('#subquestion').val()'    based on this value the model popup content have to create 
<%@lg = Language.all %>
<% @qs_type = Question.find( javascript value ).question_type %>
<% @lg.each do |n| %>
   if ( @qs_type == 11)  
      matchingtype question two textbox
     <%= text_area %>	
     <%= text_area %>	
   elsif @qs_type == 3 
     mutiple choice one textbox. 
    <%= text_area %>
<% end %>



is there any way to do this ?