删除按钮未显示在弹出窗口中

Question

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当我单击删除时，我有弹出窗口的屏幕快照，显示更新和关闭按钮，我想要下面显示的删除和关闭按钮是我的html代码

<div class="modal fade" id="exampleModal3" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel3"
         aria-hidden="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="exampleModalLabel3">Delete Movie</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    <form id="deleteForm">
                        <div class="form-group row">
                            <div class="col-sm-10">
                                <input type="hidden" class="form-control" id="movieId">
                            </div>
                        </div>

                        <label for="idmovielist" class="col-sm-2 col-form-label">idmovielist</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="intNum" placeholder="idmovielist">
                        </div>
                        <div class="form-group row">
                            <label for="name" class="col-sm-2 col-form-label">name</label>
                            <div class="col-sm-10">
                                <input type="text" class="form-control" id="name" placeholder="name">
                            </div>
                        </div>
                        <div class="form-group row">
                            <label for="thumnail_path" class="col-sm-2 col-form-label">thumnail path</label>
                            <div class="col-sm-10">
                                <input type="text" class="form-control" id="thumnail_path" placeholder="thumnail_path">
                            </div>
                        </div>
                        <div class="form-group row">
                            <label for="description" class="col-sm-2 col-form-label">description</label>
                            <div class="col-sm-10">
                                <input type="text" class="form-control" id="description" placeholder="description">
                            </div>
                        </div>
                        <div class="form-group row">
                            <label for="year_released" class="col-sm-2 col-form-label">year released</label>
                            <div class="col-sm-10">
                                <input type="text" class="form-control" id="year_released" placeholder="year_released">
                            </div>
                        </div>
                        <div class="form-group row">
                            <label for="language_released" class="col-sm-2 col-form-label">language released</label>
                            <div class="col-sm-10">
                                <input type="text" class="form-control" id="language_released"
                                       placeholder="language_released">
                            </div>

                        </div>
                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                        <button id="deleteMovie" type="button" class="btn btn-primary" data-toggle="modal"
                                data-target=#exampleModal>Delete
                        </button>
                    </form>

                </div>
            </div>
        </div>
      </div>

我总共制作了三种模式弹出式窗体“添加编辑”和“删除”，但是由于某些原因，当我单击“删除”时，我的删除按钮不会显示