What is the difference between open( ) and send ( ) methods of XMLHttpRequest object?

Question

XMLHttpRequest object:

open ( , , )
send () <

Answer 1

The HTTP and HTTPS requests of the XMLHttpRequest object must be initialized through the open method. This method must be invoked prior to the actual sending of a request to validate and resolve the request method, URL, and URI user information to be used for the request. This method does not assure that the URL exists or the user information is correct. This method can accept up to five parameters, but requires only two, to initialize a request.