How to Remove duplicate dropdown option elements with same value

Question

How can I remove duplicate values -> drop down option elements?
I have the following HTML:

All Servers


        

Answer 1

HTML

All Servers
http://smiles.com
http://3smiles.com
http://desk.com
http://france24.com

jQuery

var seen = {};
jQuery('.something').children().each(function() {
    var txt = jQuery(this).attr('value');
    if (seen[txt]) {
        jQuery(this).remove();
    } else {
        seen[txt] = true;
    }
});

Demo