Catching one page element...

Question

Hello!
My jsp page has 2 components: a combo box and a text field. When the user chooses one element on the combo, i have to make a query to full fill the text field with the result of the query. My problem is: how do i get the selected element, to send it to the bean to make the query?
My source code:
<select name="selDesc_cc">
<%
String valor;
dados_cc = cc.dadosCentrosCustos();
while(dados_cc.next())
valor = dados_cc.getString("des_centro_custo")+" ";
valor = valor.substring(0,25);
%>
<option value="<%=valor%>"><%=valor%></option>
<%
%>
</select>
???something like this???
<input type="text" name="txtCod_cc" size="15" value="<%=getMethod(selDesc_cc.value)%>">
How do i manipulate the onChange event (to catch the selected element) of the selDesc_cc to use the setMethod of my bean??
Thank�s for your atention.
Rafael.

Answer 1

How do i manipulate the onChange event (to catch the
selected element) of the selDesc_cc to use the
setMethod of my bean??The onchange event is a javascript function, and is called on the client machine after the JSP is done and over with, and the results sent to the client. JSP runs on the Server, and javascript on the client (browser), so you can't do what you want.
What you would do is have the onchange event submit the form to a servlet or back to the same JSP page, passing the value of the combobox, then the servlet would check the value, do the appropriate method, and assign a value to the text box.
Do a search on these forums and you should come up with several similar problems, and solutions.