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jQuery Ajax call No element found issue

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清歌不尽
清歌不尽 2020-12-17 09:33

I am getting a javascript error on firefox 3.5, when trying to call an ajax method.

Please find the error below:

XML Parsing Error: no element found
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6条回答
  • 臣服心动
    2020-12-17 09:42

    I've come across an alternative cause of this - might help someone.

    If you make a $.ajax request (in my case a PUT request) that returns a 200 header but no body content I've seen this same XML Parsing error message occur - even when the dataType is set to json.

    (At least) two solutions work:

    • Make all API PUT requests return some content, or
    • Return a 204 'No Content' header instead (what I ended up doing)
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  • 忘掉有多难
    2020-12-17 09:49

    async is also part of options. Also specify the dataType as xml

    function Update(Id) {
    $.ajax({
        type: "GET",
        async: false,
        dataType: "XML",
        url: ROOT_URL + "/sevice/udates.svc/Update?Id=" + Id,
        success: function(response) {

        }
    });
}
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  • 遥遥无期
    2020-12-17 09:49

    You need to send html document to the output (the output udates.svc in your case) . If you use ASP.NET, you could do the following:

    Response.Clear();
Response.Write("<html xmlns=”http://www.w3.org/1999/xhtml”>");
Response.Write("<head><title></title></head>");
Response.Write("<body>");
Response.Write("your output");
Response.Write("</body>");
Response.Write("</html>");
Response.ContentType = "text/HTML";
Response.End();
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  • 迷失自我
    2020-12-17 09:59

    It's a known FireFox bug. https://bugzilla.mozilla.org/show_bug.cgi?id=547718 to quick fix this , you maybe can return an response with html structure(but no content).

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  • 抹茶落季
    2020-12-17 10:03

    The ajax call expects XML back (perhaps due to bad guessing) and tries to parse it and fails if nothing is returned or it is not valid XML..

    Use the dataType option to specify the format of the response.

    From the comments it looks like some browsers cannot handle an no-content response. So, a workaround for such cases might be to return something from your service (even a single space).

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  • 庸人自扰
    2020-12-17 10:05

    I fixed the problem by setting mimeType to "text/html"

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