jQuery 1.5 AJAX调用失败，并显示"invalid label".用于JSON请求 [英] jQuery 1.5 AJAX call fails with "invalid label" for JSON requests

问题描述

我刚刚从jQuery的1.4版升级到1.5版，现在我的AJAX调用始终因无效标签"错误而失败.

I've just upgraded from version 1.4 to version 1.5 of jQuery, and now my AJAX calls always fail with the "invalid label" error.

一个示例请求是:

jQuery.ajax({
    async: false
    , dataType: "json"
    , error: function (xhr, status, error) { ... }
    , success: function (data, status, xhr) { ... }
    , type: "post"
    , url: "ajax/request.asp"
});

在网上，我发现当返回的JSON没有用jQuery的回调包装时(例如jQuery1234({ "something": "abcd" }).

On the net I found this error is raised when the returned JSON is not wrapped with jQuery's callback (e.g. jQuery1234({ "something": "abcd" }).

问题是我返回的是JSON，而不是JSONP(我在AJAX请求中声明了它)，所以为什么我必须在返回的JSON中指定回调?

The problem is I'm returning a JSON, not a JSONP (and I state it in the AJAX request), so why I must specify a callback in the returned JSON?

1.5更新日志对此一无所知...(或者是我谁无法阅读?)

The 1.5 changelog says nothing about this... (Or it's me who can't read?)

更新:

这是无法正常工作的JSON的示例:

This is an example of a not working JSON:

{
   "esito":"Ok",
   "centriCosto":[
      {
         "id":"1",
         "descrizione":"Colazione"
      },
      {
         "id":"2",
         "descrizione":"Pranzo"
      },
      {
         "id":"3",
         "descrizione":"Cena"
      }
   ]
}

这是与回调包装相同的工作JSON:

And this is the same callback-wrapped working JSON:

jQuery1502710949228847014_1296739130498({
   "esito":"Ok",
   "centriCosto":[
      {
         "id":"1",
         "descrizione":"Colazione"
      },
      {
         "id":"2",
         "descrizione":"Pranzo"
      },
      {
         "id":"3",
         "descrizione":"Cena"
      }
   ]
})

顺便说一句，Firebug说它们都是有效的JSON(他对正确性非常挑剔).

By the way, Firebug says both of them are valid JSONs (and he's very picky about correctness).

推荐答案

好吧，我发现了到底是怎么回事.

Ok, I found out what the hell is happening.

jQuery的验证插件与jQuery 1.5不兼容(请参见一个和

jQuery's Validation plug-in is not compatible with jQuery 1.5 (see one and two), removing the plug-in yields to the right behaviour.

如果其他人有此问题，则插件的存储库中有一个修补程序:链接

If someone else has this problem, there's a patch in the plug-in's repository: link

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