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//add option to select with jQuery
$('#selectID').append($('<option>', {
value: 1,
text: 'Option Text'
}));
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$('#ID_DO_SELECT').append('<option value="valor">texto</option>');
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$.each(items, function (i, item) {
$('#mySelect').append($('<option>', {
value: item.value,
text : item.text
}));
});
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// Assuming we have a <select> element with id "mySelect"
var mySelect = $("#mySelect");
var option = $("<option>").val("value").text("Option Text");
mySelect.append(option);