add select options dynamically jquery code example
Example: dynamic select option dropdown in jquery
var temp = "myValue";
// Create New Option.
var newOption = $('<option>');
newOption.attr('value', temp).text(temp);
// Append that to the DropDownList.
$('#dptcentres_edit').append(newOption);
// Select the Option.
$("#dptcentres_edit > [value=" + temp + "]").attr("selected", "true");