In jQuery, I’m submitting forms to the server. When there is a validation error, I receive a 400 error from the server, and the body of the document is valid JSON. I would like to know how to access the data returned from the server.
My .error callback function on the jQuery.Ajax object is never called, so I’m using .statusCode{400} function. This runs just fine, however none of the arguments contain the response body.
Some browsers’ XHR implementations refuse to provide the response body if the HTTP status is not 2xx. What I’ve had to resort to in API design where I couldn’t control my clients was to do something like always return 200 and indicate success/failure/status in some other way (e.g., as a top-level attribute in the JSON response).