A string that specifies the URL of the new document that is to replace the current one.
The replace() method of the Location object loads and displays a new document. Loading a document in this way is different than simply setting location or location.href in one important respect: the replace() method does not generate a new entry in the History object. When you use replace(), the new URL overwrites the current entry in the History object. After calling replace(), that is, the browser's Back button will not return you to the previous URL; it will return you to the URL before that one.