删除警告框

 <!--删除警告模态框-->
            <div class="modal fade" id="deleteModel" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
                <div class="modal-dialog" role="document">
                    <div class="alert alert-danger alert-dismissible fade in" role="alert">
                        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span
                                aria-hidden="true">×</span></button>
                        <h4>是否要确定删除？</h4>
                        <p style="padding-top: 20px;padding-bottom: 20px;">
                            文件夹中包含的所有的文件都会被删除。
                        </p>
                        <p style="text-align: right;">
                            <a class="btn btn-default btn-sm" data-dismiss="modal" aria-label="Close">取 消</a>
                            <button id="btnDelete" type="button" class="btn btn-danger btn-sm">确 定</button>
                        </p>
                    </div>
                </div>
            </div>