How to remove selected option from the option list in select2 multiselect and show selected options in the order they are selected

Question

I have select2 multi select field in my form where I want to remove the selected option from the dropdown list after it is selected and again add it to the list if it is removed

Answer 1

Remove (UnSelect) item from select2 multiple selected items

first step: add 'multiple' css class to your select2 element to get the true element which you want

....


    $('select.multiple').on('select2:selecting', function (e) {
        var select = this;
        var idToRemove = '0';
        var selections = $(select).select2('data');

        var Values = new Array();

        for (var i = 0; i < selections.length; i++) {
            if (idToRemove !== selections[i].id) {
                Values.push(selections[i].id);
            }
        }
        $(select).val(Values).trigger('change');
    });