Fetch: post json data, application/json change to text/plain

Question

I\'m using chrome 53.0.2785.116 m (64-bit).

I got the following headers on devtools. The problem is marked with a \"//\" comment. content type is really not allowing

Answer 1

The mode:"no-cors" options appears to be the issue. Remove that option and the Content-Type should be set to "application/json"