Request header field access-control-allow-methods is not allowed by Access-Control-Allow-Headers in preflight response.

response.setHeader("Access-Control-Allow-Origin", "*"); response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT"); response.setHeader("Access-Control-Allow-Headers", "Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers");

has been blocked by CORS policy: Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response

var dataToSend = ' {"firstname": "' + form.vals().FirstName + '","lastname": "' + form.vals().LastName + '","email": "' + form.vals().Email + '"}';
var xhr = new XMLHttpRequest();
xhr.open('POST', 'https://exampleurl');
xhr.setRequestHeader('Content-type','application/json');
xhr.send(dataToSend);
xhr.onreadystatechange = function() {
  if (this.readyState == 4 && this.status == 200) {
	console.log(this.responseText);
  }
};



xhr.setRequestHeader("Access-Control-Allow-Origin", "*");
xhr.setRequestHeader("Access-Control-Allow-Credentials", "true");
xhr.setRequestHeader("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
xhr.setRequestHeader("Access-Control-Allow-Headers", "Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers");

Posted by: Guest on October-21-2021

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