我有一个jQuery 每个循环贯穿三个 JSONP 的URL列表，但是，一个随机数他们只是失败，出现错误：未捕获的类型错误：[对象对象窗口]产权'回调'不是一个函数

I have a jQuery each loop that runs through a list of three JSONP urls, but, a random number of them just fail with the error: Uncaught TypeError: Property 'callback' of object [object Window] is not a function.

它通常是一个或两个，有时没有，但它从来不是所有的人，我认为，它必须与异步的一部分，但我不知道如何解决它。

It is usually one or two and sometimes none but it is never all of them, I think that it has to do with the asynchronous part but I don't know how to fix it.

下面是我的code：

var feeds = ["JSONPUrl", "JSONPUrl", "JSONPUrl"];

$.each(feeds, function(index, feedUrl) {
    $.ajax({
    type: "GET",
    url: feedUrl,
    processData : true,
    data: {
        tagmode: "any",
        jsonp: "callback",
        callback: "callback"
    },
    jsonpCallback: "callback",
    dataType: "jsonp",
    success: function(data) {
        // Do some DOM manipulations with the data
    },
    error: function(x,y,z) {
    }
});
});​

任何想法？

推荐答案

您的URL看起来像？回调=回调由于硬codeD 回调属性。删除此，jQuery将自动随机名称的JSONP回调定义临时函数。

Your URL looks like ?callback=callback, because of the hard-coded callback property. Remove this, jQuery will automatically define temporary functions with random names for the JSONP callback.

data: {
    tagmode: "any",
    jsonp: "callback",     // <-- Do not forget to remove the trailing comma
    callback: "callback"   // <-- Remove this!
},
jsonpCallback: "callback", // <-- Remove this!

如果你真的想要执行一个名为回调成功的功能，包括这在成功处理程序。

If you really want to execute a function called callback on success, include this in the success handler.

关于注释：如果您的服务器预计JSONP回调参数被称为JSONP而不是回调，使用：

Regarding the comments: If your server expects the JSONP callback parameter to be called "jsonp" instead of "callback", use:

$.ajax({
    ...
    jsonp: "jsonp"
    ...
});
// results in http://..../?jsonp=jQuery234254342random2342etc