调用$.ajax jquery函数时,“未捕获RangeError：超出最大调用堆栈

发布时间：2020-12-16 02:57:04 所属栏目：百科来源：网络整理

导读：以下代码块打算从Datatable收集名为materialsInMaterialsRecieved的数据和一个名为materials-recieved的表单,并创建一个如下所示的对象. { PurchaSEOrderId: "1",ReceivedDate: "07/23/2016",MaterialsInMaterialsRecived: { Cost: "2",MaterialId: "1",Mate

以下代码块打算从Datatable收集名为materialsInMaterialsRecieved的数据和一个名为materials-recieved的表单,并创建一个如下所示的对象.

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

正在创建此对象并将其存储为submitData. submitData需要通过ajax发送到API网址.但是当这样做时,会抛出一个错误,表示Uncaught RangeError：超出了最大调用堆栈大小.

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,那么错误就不会出现.

解决方法

submitData是一个巨大的类数组对象.如果我将submitData直接传递给$.ajax,JQuery会尝试将有效负载数据序列化为json,因为我已经将dataType作为’json’.这个JQuery序列化创建了许多方法回调并冻结了浏览器,然后抛出错误通知它.

解决此问题的简单方法是避免JQuery序列化并将字符串化版本的有效负载数据传递给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);
        }
    });

（编辑：李大同）

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