The request method
The url
Optional
withCredentials: booleanOption flag indicating that credentials should be sent
Optional flag indicating that the XHR object should be marked as disabled and not tracked (default is false)
Optional flag indicating if the instance should be a synchronous request (defaults to false)
Optional
timeout: numberOptional value identifying the timeout value that should be assigned to the XHR request
A new opened XHR request
Create and open an XMLHttpRequest object