search for: testfieldone

Hello community, I''m new to rubyonrails and to this Forum. I have to call 2 Fields, generated by ruby, from a javafunction (onSubmit) but when I use this example it didn''t work, why? <%= start_form_tag({:action=> "show"}, { :onSubmit =>"post[testfieldone].value=examplefunction(post[textfieldtwo].value+post[textfieldthree].value);" }) %> ----snip <%= hiddenfield_field "post", "textfieldone", :size => 20%> <%= text_field "post", "textfieldtwo", :size => 20%> <%= text_field "...