jquery - "Uncaught RangeError: Maximum call stack size exceeded"调用 $.ajax jquery 函数时

Question

以下代码块旨在从名为 ma​​terialsInMaterialsRecieved 的数据表和名为 ma​​terials-recieved 的表单收集数据，并创建一个对象，如下例所示。

{
    PurchaseOrderId: "1",
    ReceivedDate: "07/23/2016",
    MaterialsInMaterialsRecived: {
        Cost: "2",
        MaterialId: "1",
        MaterialName: "Silk",
        QuantityDispatched: "2",
        QuantityRecieved: "2",
        Remark: "asda"
    }
}

该对象正在创建并存储为submitData。 submitData 需要通过 ajax 发送到 API url。但这样做时，会抛出一个错误，显示 Uncaught RangeError: Maximum call stack size displayed.

以下是 html 标记，

<div class="col-md-6 col-sm-12">
    <form action="/api/MaterialsRecieveds/AddMaterialsRecieved" id="materials-recieved" method="POST">
        <div id="name-group" class="form-group">

            <label for="name">Purchase OrderID</label>
            <select name="PurchaseOrderId" class="form-control" id="PurchaseOrderList"></select>

            <label for="date">P/O sent time</label>
            <input type="text" class="form-control" name="ReceivedDate" id="receivedDate">
        </div>
    </form>
        <button class="btn btn-success" id="create-materials-recieved-note">Create Materials Recieved Note</button>
</div>
<div class="col-md-12">
    <table id="materials-in-materials-recieved" class="display" cellspacing="0" width="100%">
        <thead>
            <tr>
                <th>Material Id</th>
                <th>Material Name</th>
                <th>Quantity Recieved</th>
                <th>Quantity Dispatched</th>
                <th>Cost</th>
                <th>Remarks</th>
            </tr>
        </thead>
        <tbody></tbody>
    </table>
</div>

以下是javacript代码，

    $("#create-materials-recieved-note").on('click',function (event) {
        var submitData = {};
        var materials = materialsInMaterialsRecieved.rows().data(); // materialsInMaterialsRecieved is a handle for a Datatable

        $("#materials-recieved .form-control").each(function () {
            submitData[$(this).attr2("name")] = $(this).val();

        })

        submitData["MaterialsInMaterialsRecived"] = materials;
        console.log(submitData);

        $.ajax({
            type: 'post', // define the type of http verb we want to use (post for our form)
            url: '/api/MaterialsRecieveds/AddMaterialsRecieved', // the url where we want to post
            data: submitData, // our data object
            dataType: 'json', // what type of data do we expect back from the server
            contentType: 'application/json',      
            success: function (data) {
                console.log(data);
            }
        });
        event.preventDefault();
    });

如果我注释掉 $.ajax(... 语句，则不会出现错误。

Answer 1

submitData 是一个巨大的类似数组的对象。如果我将 submitData 直接传递到 $.ajax 中，JQuery 会尝试将有效负载数据序列化为 json，因为我已将 dataType 指定为“json”。此 JQuery 序列化创建了大量方法回调并卡住浏览器，然后抛出通知它的错误。

此问题的简单解决方案是避免 JQuery 序列化并将负载数据的字符串化版本传递给 ajax 调用。

$.ajax({
    type: 'post', 
    url: '/api/MaterialsRecieveds/AddMaterialsRecieved', 
    data: JSON.stringify(submitData), // stringyfy before passing
    dataType: 'json', // payload is json
    contentType : 'application/json',
    success: function (data) {
        console.log(data);
        }
    });