Thymeleaf 자바스크립트 함수 사용

<button th:onclick="|index.replyDelete(${board.id},${reply.id})|"  class="badge">삭제</button>

let index = {
    replyDelete: function (boardId, replyId) {
        $.ajax({
            type: "DELETE",
            url: `/api/board/${boardId}/reply/${replyId}`,
            dataType: "json"
        }).done(function (response) {
            location.reload();
            alert("댓글삭제 완료");

        }).fail(function (error) {
            alert(JSON.stringify(error));
        }); 
    }
}