$(form).find("#comment-error").text(xhr.responseText);
$(form).find("#comment-error").prop("hidden", false);
$(form).find("input[type=submit]").prop("disabled", false);
$(form).find("#comment-error").text(xhr.responseText);
$(form).find("#comment-error").prop("hidden", false);
$(form).find("input[type=submit]").prop("disabled", false);