Make CORS Ajax requests using XMLHttpRequest

Question

This is the code to validate geoJSON according to the sample provided:

 function processSuccess(data){
            if(data.status===\"ok\")  console.log(\"Yo         


        

Answer 1

You shouldn't be setting Access-Control-Allow-Origin as a request header, that's a response header.

You can see from the response what request headers the server will accept:

Access-Control-Allow-Headers:Origin,Content-Type,Accept

And the error message tells you that:

Request header field Access-Control-Allow-Origin is not allowed

It looks like it might not accept X-Requested-With either.