javascript - history.go('url') issue

Question

I've seen that history.go() method can have two types of parameter:

see:

 http://www.w3schools.com/jsref/met_his_go.asp 

But url does not working at all.

I use JavaScript console of browser to test this method but got no success.

I know that there are security issues, that you can't read history entries. You can just go back and forward.

So why this string parameter listed in all js references?

Answer 1

Supplying a URL as a parameter is a non-standard feature and will not work in all browsers. Most browsers accept only a relative number, e.g. 1 or -1.

From the MDC documentation (emphasis mine):

[history.go(integerDelta)] Loads a page from the session history, identified by its relative location to the current page, for example -1 for the previous page or 1 for the next page. When integerDelta is out of bounds (e.g. -1 when there are no previously visited pages in the session history), the method doesn't do anything and doesn't raise an exception. Calling go() without parameters or with a non-integer argument has no effect (unlike Internet Explorer, which supports string URLs as the argument).

This is what happens when you use W3Schools as a learning resource ;-)