example to select2 when json return in bigger

select2example.js

$("#ajax-example").select2({
    ajax: {
        url: 'yourReturn.json',
        dataType: 'json',
        delay: 350,
        data: function(params) {
            return {
                q: params.term // search term
            };
        },
        processResults: function(data, params) {
            // parse the results into the format expected by Select2
            // since we are using custom formatting functions we do not need to
            // alter the remote JSON data, except to indicate that infinite
            // scrolling can be used
            var resData = [];
            data.forEach(function(value) {
                if (value.full_name.indexOf(params.term) != -1)
                    resData.push(value)
            })
            return {
                results: $.map(resData, function(item) {
                    return {
                        text: item.full_name,
                        id: item.id
                    }
                })
            };
        },
        cache: true
    },
    minimumInputLength: 3
})