Was the book of revelations wrote while john was at island patmos?

A:Simply because the Book of Revelation was signed by a person called John, it was decided late in the second century that this must have been the apostle John. Whoever this John was, it clearly was not the author of John's Gospel, as the style and the theology are too different. Nevertheless, after the decision to attribute Revelation to the apostle John, a tradition evolved that the apostle John was exiled to Patmos because he miraculously survived all attempts to kill him. It is never explained how it was possible to exile John anywhere, if his enemies were unable to harm him.

There is no evidence that the apostle John was ever on the island of Patmos. Revelation 1:1 states that the Book of Revelation was written by a person called John, and Revelation 1:9 says that he wrote from Patmos, without at any stage saying that he had been exiled to the island. So unless there is proof that he was forcibly restrained, it should be assumed that John of Patmos could leave the island whenever he chose, and return at any time he chose.