select2 dropdown 2 code example

Example 1: select2 multi select

######## In your HTML:
<select class="js-example-basic-multiple" name="states[]" multiple="multiple">
  <option value="AL">Alabama</option>
    ...
  <option value="WY">Wyoming</option>
</select>

####### In your Javascript (external .js resource or <script> tag):
$(document).ready(function() {
    $('.js-example-basic-multiple').select2();
});

######### Get Selected values
$('.js-example-basic-multiple').select2('val')

######## Pre select values on page loads
 $('.js-example-basic-multiple').val(['AL', 'WY']).trigger('change');

Example 2: select 2 dropdown

$('#element').select2({
    placeholder: 'Select a option',
    minimumInputLength: 3,
    ajax: {
        url: route('api.fetch-options'),
        dataType: 'json',
        type: 'GET',
        quietMillis: 50,
        data: function (params) {
            return {
                visitor_name: params.term
            }
        },
        processResults({ data }) {
            return {
                results: $.map(data, function (item) {
                    return {
                        text: item.name,
                        id: item.id,
                    }
                })
            }
        }
    }
}).change(() => {
	// perform some action on change
});