usage.php

{{ Form::open(['data-remote', 'data-remote-success-message' => 'I have now done the thing.']) }}
    {{ Form::text('name') }}
    {{ Form::submit('Submit', ['data-confirm' => 'Are you sure?']) }}
{{ Form::close() }}

utils.js

(function() {

    var submitLaravelRequest = function(e) {
        var form = $(this);
        var method = form.find('input[name="_method"]').val() || 'POST';
        var url = form.prop('action');

        $.ajax({
            type: method,
            url: url,
            data: form.serialize(),
            success: function() {
                var message = form.data('remote-success-message');

                if (message) {
                    $('.flash').html(message).fadeIn(300).delay(2500).fadeOut(300);
                }
            }
        });

        e.preventDefault();
    };

    var confirmAction = function(e) {
        var input = $(this);

        input.prop('disabled', 'disabled');

        // Or, much better, use a dedicated modal.
        if ( ! confirm(input.data('confirm'))) {
            e.preventDefault();
        }

        input.removeAttr('disabled');
    };

    // And bind functions to user events.
    $('form[data-remote]').on('submit', submitLaravelRequest);
    $('input[data-confirm], button[data-confirm]').on('click', confirmAction);

})();