[wp-trac] [WordPress Trac] #31577: wp.ajax.send JS function should send ajax request with dataType json

[WordPress Trac]

#31577: wp.ajax.send JS function should send ajax request with dataType json
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 Reporter:  TikiTDO       |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:  javascript
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Comment (by TikiTDO):

 Replying to [comment:2 nacin]:
 > I believe what needs to happen is `Content-type: application/json` needs
 to be returned, correct? If you are using the corresponding PHP API
 (`wp_send_json_success()/_error()`), then you should always have this
 content type set.

 Logically, yes. However, this was happening to a client when they were
 trying to add an image to a post, even after I had disabled all plugins.
 Perhaps there might be a deeper root cause, but I found that the attached
 fix was sufficient for this scenario.

 Given that the function in question only deals with JSON responses I
 figured it would be a good idea to get this in place, that way even if
 something goes wrong higher up the chain there is still a chance to
 recover from it. Otherwise I would like to spare a less experienced
 developer a painful multi-hour bug hunt.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31577#comment:3>
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