yii2 avoid second time send form if page not been reloaded (for example if this form call file for download)

main.js

$('form').on('beforeSubmit', function(event) {
    let $form = $(this),
        data = $form.data('yiiActiveForm');
    if ($form.data('yiiSubmitFinalizePromise') && data.validated) {
        data.validated = false;
        return true;
    }

    return false;
});