Note: This feature is available in Web Workers, except for Service Workers.
The XMLHttpRequest() constructor creates a new XMLHttpRequest.
new XMLHttpRequest()
// Non-standard
new XMLHttpRequest(options)There are no standard parameters. However, Firefox allows a non-standard parameter:
options An object that can contain the following flags:
mozAnonA boolean. When setting this flag to true will cause the browser not to expose the origin and user credentials when fetching resources. Most important, this means that cookies will not be sent unless explicitly added using setRequestHeader.
mozSystemA boolean. When setting this flag to true, the same origin policy will not be enforced on the request.
A new XMLHttpRequest object. The object must be prepared by at least calling open() to initialize it before calling send() to send the request to the server.