Answers for "select2 get options"

get select2 selected value

//initialize
$('#mySelect2').select2('data');
//get selected value
$('#mySelect2').find(':selected');

get value select 2

//get selected value
$('#mySelect2').find(':selected').val();

select2 preselect option

$('#mySelect2').val('1'); // Select the option with a value of '1'
$('#mySelect2').trigger('change'); // Notify any JS components that the value changed

select2

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/select2.min.js"></script>

select2 replace options

var options = [];
$.each(dataReturn, function (i, obj) {
    //console.log(i);
    //console.log(obj);
    options.push({
        text: obj.NickName,
        id: obj.NickName
    });
})
$("#BeneType").empty().select2({
    data: options
});

select2 documentation

$('.js-example-basic-single').select2({
  placeholder: 'Select an option'
});