jQueryajax：即使响应正常，错误也会运行200-jQueryajax:errorrunseveniftheresponseisOK200

I have a form which submit a form via AJAX with :remote => true. Looking at the server log and FireBug, I get the response 200 OK and it returns JSON in the form of:

我有一个表单，通过AJAX提交表单：remote => true。查看服务器日志和FireBug，我得到200 OK的响应，它以下列形式返回JSON：

{ "email": "test@test.com"}

then I have these two handlers:

然后我有这两个处理程序：

$('#new_invitation').bind("ajax:success", function(event, data, status, xhr) {
    alert('test');
});

$('#new_invitation').bind("ajax:error", function() {
    alert('error');
});

and even if I get back a 200OK, it is the error handler that fires. The only time I managed to make the success handler work was when I send a empty response with 200 in the header.

即使我回到200OK，它也会触发错误处理程序。我设法让成功处理程序工作的唯一一次是我在标题中发送一个200的空响应。

I can't figure out why this isnt working :-S

我无法弄清楚为什么这不起作用：-S

EDIT 1------------ After doing these changes:

编辑1 ------------完成这些更改后：

$('#new_invitation').bind("ajaxSuccess", function(event, data, status, xhr) {
    alert('test');
});

$('#new_invitation').bind("ajaxError", function(jqXHR, textStatus, errorThrown) {
alert('error');
    console.log(jqXHR.responseText);
    console.log(textStatus.responseText);
    console.log(errorThrown.responseText);
});

I am still getting the same error. The log stuff gives me:

我仍然得到同样的错误。日志的东西给了我：

undefined
my_email@test.com
undefined

Here is the code for the form (standard Rails stuff):

这是表单的代码（标准Rails的东西）：

<%= form_for @shoot.invitations.new, :url=>shoot_invitations_path(@shoot), :remote => true, :html => {:class => 'form-inline'} do |f| %>
    <%= f.text_field :email, :'placeholder' => 'ex: test@test.com' %>
    <%= f.text_field :role, :'placeholder' => 'ex: Photographer' %>
    <%= f.submit "Invite", :class => 'btn btn-success' %>
<% end %>

EDIT 2 ---------

编辑2 ---------

I did a few changes and now it seems my error is a parse error. I dont understand because this is the JSON I am getting back from the server (data.responseText), which seems all good:

我做了一些更改，现在看来我的错误是一个解析错误。我不明白，因为这是我从服务器（data.responseText）回来的JSON，这似乎都很好：

{"email":"zxxczxc@test.com"}

ANSWER --------- I managed to have everything work when I put :'data-type' => :json in the form options. I tried this before and it did not work because I put it in the form_tag options and not the html options...

答案---------当我把'data-type'=>：json放在表单选项中时，我设法让一切正常。我之前尝试过这个并没有用，因为我把它放在form_tag选项而不是html选项中......

4 个解决方案

#HACK JSON.parse('') should return undefined, not throw an error
_parse = JSON.parse
JSON.parse = (str) =>
  unless str == ''
    _parse.apply JSON, arguments

//HACK JSON.parse('') should return undefined, not throw an error
var _parse = JSON.parse
JSON.parse = function(str) {
  if (str !== '')
    return _parse.apply(JSON, arguments);
  else
    return undefined;
}