select2 multiple get values code example

Example 1: get value select 2

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

Example 2: jquery select2 multiple select all

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

Example 3: select2 multiple selected values

in_array($value, $array)