SyntaxError：JSON.parse数据不喜欢0？

Can someone explain to me why I get the below error by executing the following code?

有人可以向我解释为什么我通过执行以下代码得到以下错误?

SyntaxError : JSON.parse : unexpected end of data at line 1 column 1 of the JSON data"

SyntaxError:JSON.parse:JSON数据第1行第1列的意外数据结尾“

After thousands of trials, I realized that if I replace the value 0 from StatutForm with 2 or anything else, the error disappears. FormData does not accept the value 0?

经过数千次试验,我意识到如果我用2或其他任何东西替换StatutForm中的值0,则错误消失。 FormData不接受值0?

Thank you for your help.

谢谢您的帮助。

The code :

代码 :

$(document).on('click', '.button1, .button2', function() {
    var Form_id = $(this).attr('data-id');
    var formData = new FormData();
    formData.append("IDForm", $('#IDForm' + Form_id).val());
    formData.append("FirstnameForm", $('#FirstnameForm' + Form_id).val());
    formData.append("NameForm", $('#NameForm' + Form_id).val());
    formData.append("BirthForm", $('#BirthForm' + Form_id).val());
    formData.append("EmailForm", $('#EmailForm' + Form_id).val());
    formData.append("SchoolForm", $('#SchoolForm' + Form_id).val());
    formData.append("DateFromForm", $('#DateFromForm' + Form_id).val());
    formData.append("DateToForm", $('#DateToForm' + Form_id).val());
    formData.append("DaysForm", $('#DaysForm' + Form_id).val());
    formData.append("TodayForm", $('#TodayForm' + Form_id).val());

    if (!$(this).hasClass('button1')) {
        formData.append("StatutForm", "1");
    }
    else {
        var texte_Form = $('#ecrire_' + Form_id).val();
        var mail_Form = new Blob([texte_Form], { type: "text/xml"});
        formData.append("mail_Form", texte_Form);
        formData.append("StatutForm", "0");
    }

    $.ajax({
        type: 'POST', 
        url: 'file.php', 
        dataType: "json", 
        data: formData, 
        cache: false, 
        contentType: false,
        processData: false,
        success: function (form) {
            alert("Right !.");
        },
        error: function(){
            alert("Error !");
        }
    });
});

1 个解决方案

#1

You receive an error when parsing data received from the server.

解析从服务器收到的数据时收到错误。

dataType: "json"

dataType – The type of data that you're expecting back from the server.

dataType - 您期望从服务器返回的数据类型。

json – Evaluates the response as JSON and returns a JavaScript object.

json - 将响应评估为JSON并返回JavaScript对象。

http://api.jquery.com/jQuery.ajax/

#1