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Sends a JSON response composed of a stringified version of the specified data.


return res.json([statusCode, ] data);


This method is identical to res.send() when an object or array is passed, however it may be used for explicit JSON conversion of non-objects (null, undefined, etc), though these are technically not valid JSON.


res.json({ user: 'tobi' })
res.json(500, { error: 'message' })


  • Don't forget this method's name is all lowercase.
  • This method is terminal, meaning it is generally the last line of code your app should run for a given request (hence the advisory usage of return throughout these docs).

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