jQuery和AJAX响应头 [英] jQuery and AJAX response header

问题描述

所以我有这个jQuery的AJAX调用和响应来自服务器302重定向的形式。我想借此重定向并加载在iframe，但是当我尝试查看一个JavaScript警告的头信息，它出现空，即使萤火虫正确看到它。

So I've got this jQuery AJAX call, and the response comes from the server in the form of a 302 redirect. I'd like to take this redirect and load it in an iframe, but when I try to view the header info with a javascript alert, it comes up null, even though firebug sees it correctly.

这里的code，如果它会帮助：

Here's the code, if it'll help:

$j.ajax({
    type: 'POST',
    url:'url.do',
    data: formData,
    complete: function(resp){
        alert(resp.getAllResponseHeaders());
    }
});

我真的没有访问服务器端的东西，以推动URL以响应体，我知道会是最简单的解决方案，因此任何帮助，标题的解析将是非常美妙。

I don't really have access to the server-side stuff in order to move the URL to the response body, which I know would be the easiest solution, so any help with the parsing of the header would be fantastic.

推荐答案

cballou的解决方案将工作，如果你使用的是旧版本的jQuery。在新版本中，你也可以尝试：

cballou's solution will work if you are using an old version of jquery. In newer versions you can also try:

  $.ajax({
   type: 'POST',
   url:'url.do',
   data: formData,
   success: function(data, textStatus, request){
        alert(request.getResponseHeader('some_header'));
   },
   error: function (request, textStatus, errorThrown) {
        alert(request.getResponseHeader('some_header'));
   }
  });

根据文档的XMLHtt prequest对象可在jQuery 1.4。

According to docs the XMLHttpRequest object is available as of jQuery 1.4.

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