Question

I have got a “kategorie” select, and I try to get te value of selected answers.
Then by this value my website need to change the css atribute.

I don’t know what is wrong, but this isnt working.
Please,help me.
Ps. Sorry for my english.

    $('select#kategorie').change(function() {
    var value = $('select#kategorie:selected').val();
    if (value=="1" || value=="10")
    {
    $("#liczba-pokoi").css("display","block");
    }
    if else (value=="2" || value=="11")
    {
    $("#liczba-pokoi").css("display","none");
    }
    if else ((value=="3" || value=="12")
    {
    $("#liczba-pokoi").css("display","none");
    }
    if else (value=="4" || value=="13")
    {
    $("#liczba-pokoi").css("display","block");
    }
    });

Answer 1

A tidier solution:

var val, liczba_pokoi = $("#liczba-pokoi");

$('#kategorie').change(function() {

  val = $(this).val();

  if(val == 1 || val == 4 || val == 10 || val == 13) liczba_pokoi.show();
  if(val == 2 || val == 3 || val == 11 || val == 12) liczba_pokoi.hide();  

});

See fiddle: http://jsfiddle.net/pBxfX/