select2 is called what code example

Example 1: select2 destroy

if ($('#mySelect2').hasClass("select2-hidden-accessible")) {
    // Select2 has been initialized
    $('#mySelect2').select2('destroy');
}

Example 2: jquery select2 multiple select all

$("#checkbox").click(function(){
    if($("#checkbox").is(':checked') ){
        $("select > option").prop("selected","selected");
    }else{
        $("select > option").removeAttr("selected");
     }
});