jQuery的dataFilter响应未定义 [英] jQuery dataFilter response undefined

问题描述

我从一个外部API通过JSONP与jQuery.ajax（）获取数据。

I am fetching data from an external api via jsonp with jQuery.ajax().

这是我的ajax设置：

this is my ajax setup:

var ajax_options = {
    dataType: 'jsonp',
    jsonp: 'callback',
    url: url,
    data: parameters,
    success: function (response) {
        console.log(response); // works, prints the correct data
    },
    dataFilter: function (response, type) {
        console.log(response); // prints undefined
        console.log(type); //prints "jsonp"
    }
};
$.ajax(ajax_options);

我想使用dataFilter函数preprocess我的反应进行错误处理。但是，这个功能的响应参数始终是不确定的。在成功的函数关系。然而，我得到正确的响应数据。

I want to use the dataFilter function to preprocess my response for error handling. But the response argument of this function is always undefined. In the success function however, I get the correct response data.

你知道可能是什么问题？

Do you know what might be the problem?

推荐答案

我可以确认，这个问题是一个痛苦的屁股。有什么需要做的就是用$ .ajaxSetup（{}）;连同转换器：

I can verify that this issue is a pain in the arse. What needs to be done is to use $.ajaxSetup({}); along with the converters:

$。ajaxSetup

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

然后，你需要使用转换器来处理你的数据类型dataFilters，回调和解析。

Then, you'll need to use Converters to handle your dataType, dataFilters, callbacks, and parsing.

jQuery.Extensions - 转换器

http://api.jquery.com/extending-ajax/#Converters

虽然你不这样做的有无的通过$ .ajaxSetup使用转换器 -

While you don't have to use Converters via $.ajaxSetup -

$.ajax({ converters: 'params go here' });

情景，因为你面对，那就是通过为您的JSONP需要的所有数据已经​​该转换器适用于它。这应该为您提供基于你期望的结果类型和需要一个更现实的控制。

Because of the scenario you're facing, all data that is passed as your jsonp needs to have this converter applied to it. This should provide you with a more realistic control based on your expected result type and needs.

这篇关于jQuery的dataFilter响应未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！