NodeJS won't return data to jQuery.getJSON

Question

I've set up NodeJS and it's returning data when I browse to the URL: http://184.106.206.235

However, when I try to call that URL using $.getJSON, the callback shows null for the data variable and "success" for the textStatus variable.

I imagine this could be a cross-domain thing, but I'm surprised that the textStatus says "success" if that's the case.

In case it's helpful, here's the server-side JS:

http.createServer(function(req, res){
  var output = {message: "Hello World!"};
  var body = JSON.stringify(output);

  res.writeHead(200, {'Content-Type': 'application/json', 'Content-Length': body.length});
  res.end(body);
}).listen(80, "184.106.206.235");

Any ideas?

Yes, though I'm trying to access it using "client" JS hosted on a different domain. — marclar, Jul 20 '10 at 23:20
If you look at the callback for http://api.jquery.com/jQuery.getJSON/, you'll see that it's supposed to return "data" and "textStatus" objects. — marclar, Jul 20 '10 at 23:58

marclar · Accepted Answer · 2012-01-02T04:36:59.373

16

Add the "Access-Control-Allow-Origin": "*" property to your writeHead() call:

res.writeHead(200, {
  "Content-Type": "application/json",
  "Access-Control-Allow-Origin": "*"
});

edited Jan 02 '12 at 04:36

answered Aug 30 '10 at 17:06

marclar

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The content type for json data should be application/json, see question http://stackoverflow.com/questions/477816/the-right-json-content-type – h--n Jan 01 '12 at 22:16

score 3 · Answer 2 · answered Jul 28 '10 at 16:48

3

Just a note for anyone having the same problem, the solution above worked for me with one minor alteration:

"Content-Type": "application/json"

Not "text/json".

Thanks for the solution! It was driving me crazy.

answered Jul 28 '10 at 16:48

Matthew Taylor

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score 2 · Answer 3 · answered Mar 18 '12 at 22:34

if you are using express framework you can try one of the following:
1. res.contentType('json'); to set to content type.
2. res.send({ some: 'json' }); that will set the content type and parse it for you.
3. res.json({ user: 'tj' }); probably the best way to do it.

hope it helps :)

NodeJS won't return data to jQuery.getJSON

3 Answers3

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