javascript - 如何获取 jquery ajax 状态码

Question

我想知道我们如何在 jquery 中获取 ajax 状态码。我有这个 ajax block :

$.ajax{
    type: "GET",
    url: "keyword_mapping.html",
    data:"ajax=yes&sf="+status_flag,

    success: callback.success,
    complete: rollup_filters(),
    failure: function(){
        alert("Failure");
    }
    }

现在在上面的代码中，如果失败，我如何获得ajax状态代码和该状态代码的一些描述？？

Answer 1

您想使用 error捕捉这个的选项。例如:

error: function (jqXHR, textStatus, errorThrown)
    // Your handler here...
}

然后您可以使用 jqXHR 对象来检索有关失败的信息。

From the documentation :

For backward compatibility with XMLHttpRequest, a jqXHR object will expose the following properties and methods:

• readyState
• status
• statusText
• responseXML and/or responseText when the underlying request responded with xml and/or text, respectively
• setRequestHeader(name, value) which departs from the standard by replacing the old value with the new one rather than concatenating the new value to the old one
• getAllResponseHeaders()
• getResponseHeader()
• abort()