javascript - filtering drop down menu using value -


is possible in javascript filter drop down menu based on field menu using value attribute?

i mean, have following code, built django-framework :

<p><label for="id_country">country :</label> <select id="id_region" name="region"> <option value="" selected="selected">---------</option> <option value="1">usa</option> <option value="2">france</option> </select></p> <p><label for="id_region">region :</label> <select id="id_city" name="city"> <option value="" selected="selected">---------</option> <option value="1">california</option> <option value="2">new-york</option> <option value="3">oregon</option> <option value="4">tenessee</option> <option value="5">paris</option> <option value="6">bretagne</option> ...

and have filter value using number of value want properly. can write like:

if(id_country == usa)      then:         id_region_value between 1 , 4 if(id_country == france)     then:         id_region_value between 5 , 6

you need each second select

$("#id_region").change(function(){     $("#id_city option[value!='']").hide();     if($(this).val()==1){         $("#id_city option").each(function(){             if($(this).val() >=1 && 4>=$(this).val()){                 $(this).show();             }         });     }     if($(this).val()==2){         $("#id_city option").each(function(){             if($(this).val() >=5 && 6>=$(this).val()){                 $(this).show();             }         });     } });

http://jsfiddle.net/ltasty/46xlzgqm/


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