select2 find option and trigger code example

Example 1: select2 clear options

Remove the selected options : 
-----------------------------
$('#mySelect2').val(null).trigger('change');

============================================

Completly remove the select2 initialization :
--------------------------------------------
$('#payment_method').html('').select2({data: [{id: '', text: ''}]});

Example 2: select 2 select a value

SELECT2 V4 :
============
For select2 v4 you can append directly an option/s as follow:

<select id="myMultipleSelect2" multiple="" name="myMultipleSelect2[]">
    <option value="TheID" selected="selected">The text</option>                                                                   
</select>

Or with JQuery:
---------------

var $newOption = $("<option selected='selected'></option>").val("TheID")
					.text("The text")
 
$("#myMultipleSelect2").append($newOption).trigger('change');

other example :
---------------

$("#myMultipleSelect2").val(5).trigger('change');