对不起这个乞丐的问题，我在JQuery中完全是个菜鸟，我有一个包含动态表的 flask 表单，我想把表的值发送到我的后端，它几乎完成了，但是我得到了secound td的值，如果我在first td中输入比萨饼，在secound td中输入20，我在我的后端得到了这个：{“”：“20”}这是我的html（我从我的cod中切下了大部分 flask 形式）：

<div class="card-body">
                        <h1>New Cafe</h1>
                        <p class="text-muted">Add Your Cafe</p>

                        <form id="my-form" name="cafe" method="post" action=""
                              enctype="multipart/form-data">
                            {{ cafe_form.csrf_token }}
                            {{ ckeditor.load() }}
                            {{ ckeditor.config(name='about') }}
                            {{ cafe_form.name.label }}
                            <div class="input-group mb-3">
                                <span class="input-group-addon"></span>
                                {{ cafe_form.name(class="form-control") }}
                            </div>
                            <div id="data_container">
                                <div id="dynamic-fields">
                                    <table>
                                        <thead>
                                        <tr>
                                            <th>Menu item</th>
                                            <th>Menu item Price in USD $</th>
                                        </tr>
                                        </thead>
                                        <tbody class="p-4">
                                        <tr class="p-2">
                                            <td><input  type="text"></td>
                                            <td><input  type="text"></td>
                                        </tr>
                                        </tbody>
                                    </table>
                                </div>
                            </div>
                        </form>
                        <div class="pt-2 pb-2">
                   <button id="submit-btn" class="btn btn-outline-primary px-4">Submit</button>
                            <button id="add_rows" class="btn btn-outline-dark">+</button>
                        </div>
                    </div>

这是我添加额外行的js：

$("#add_rows").click(function () {
    // each click on the `+` button adds a row to the table
    $("#data_container tbody").append(`<tr><td><input type="text"></td><td><input type="text"></td></tr>`);
});
$("#submit_rows").click(function () {
    // `obj` for storing the inputs, and the `n` to make unrepeated keys
    let obj = {}, n = 0;
    // loop over the rows
    $("#data_container tbody tr").each(function (ind, tr) {
        // add an array to the object
        obj[`r${n}`] = [];
        // loop over the inputs of this row
        $(this).find("input").each(function (ind, input) {
            // add the value of the input to the array and make sure to remove any semicolon since
            // we will use it to separate the inputs
            const val = input.value.replace(/;/g, "");
            obj[`r${n}`].push(val);
        });
        // no need for the array, just join it to a string of values separated by semicolons
        obj[`r${n}`] = obj[`r${n}`].join(";");
        // increase the value of `n`
        n++;
    });
    // log the object to the console so you can see what we are sending
    console.log(obj);
    // send the data to the server, see the console for a logging message for success
    $.post("", obj, (data, status) => console.log("Status: " + status));
});

这是我尝试将数据发送到后端的部分：

const weburl = "/owner-new-cafe";
    document.getElementById('submit-btn').addEventListener('click', function (event) {
        event.preventDefault();
        submitForm();
    });

    function submitForm() {
        // Collect static form data
        const formData = new FormData(document.getElementById('my-form'));

        // Collect dynamic form data
        const dynamicData = [];
        $('#dynamic-fields tbody tr').each(function () {
            const row = {};
            $(this).find('input').each(function (ind, input) {
                row[this.name] = this.value;
            });
            dynamicData.push(row);
        });

        // Add dynamic form data to FormData object
        formData.append('dynamicData', JSON.stringify(dynamicData));
        document.getElementById("test").innerHTML = formData;

        // Send form data to Flask app using AJAX
        $.ajax({
            url: weburl,
            method: 'POST',
            data: formData,
            processData: false,
            contentType: false,
            success: function (response) {
                // Handle response from Flask app
            },
            error: function (xhr) {
                // Handle error
            }
        });

    }

请不要给予我只是回答我试着学习我想知道什么是我的mistakle和什么是最好的方式这样做非常感谢你