how to implement select2 in our select field code example
Example 1: select2 add option
if ($('#mySelect2').find("option[value='" + data.id + "']").length) {
$('#mySelect2').val(data.id).trigger('change');
} else {
var newOption = new Option(data.text, data.id, true, true);
$('#mySelect2').append(newOption).trigger('change');
}
Example 2: jquery select2 multiple select all
$("#checkbox").click(function(){
if($("#checkbox").is(':checked') ){
$("select > option").prop("selected","selected");
}else{
$("select > option").removeAttr("selected");
}
});