Hi,
Please always provide your code to get the accurate solution, I assume your dropdown id is select1 and by using JQuery you can retrive the options. Use this code below
var domelts = $('#select1 option');
var values = $.map(domelts, function(elt, i) { return $(elt).val();});
first get the elements into a list and next translate that into an array of just the values. Later you can iterate the array items to get values.
Hope this will help.