Substring, substr or slice not working

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0

i have 2 selects that return values from a database with the second select depending on the first select. The SAMPAREA select returns values like XX345,XXab,XX2e,XX and SAMPCOUNTRY returns just XX values.

I need just to take the XX value from SAMPAREA to compare to the XX value from SAMPCOUNTRY and substring doesn't seem to work at all, i still get only the values with just XX in them from SAMPAREA.

This is the jquery.

$("#sampcountry").change(function() { 
if($(this).data('options') === undefined){
   $(this).data('options',$('#samparea option').clone());
    }
var str = $(this).val();
var id = str.substring(0,2);
var options = $(this).data('options').filter('[value=' + id + ']');
$('#samparea').html(options);
});

And this is the jsp.

<td><select id="sampcountry" name="sampcountry" onblur="return validate2(this);" title="Ţara în care a fost prelevata proba (ISO 3166-1-alpha-2).">
           <option value=""/>
        <%ResultSet rs1 = st.executeQuery("select code,name from country");
       while(rs1.next()){
        %>
        <option value="<%=rs1.getString("code")%>"><%=rs1.getString("name")%></option>
       <%}%>
               </select></td>
<td><select id="samparea" name="samparea" style="width: 300px" title="Zona în care a fost prelevată proba  (Nomenclatorul Unităţilor Teritoriale pentru Statistică NUTS –  sistem de coduri valabil doar pentru ţările membre UE şi Elveţia).">
           <option value=""/>
           <% ResultSet rs2 = st.executeQuery("select code,name from nuts");
            while(rs2.next()){
        %>
        <option value="<%=rs2.getString("code")%>"><%=rs2.getString("name")%></option>
       <%}%>
               </select></td>

asked 1 min ago

Synnergy

3