Nowadays we are familiar with the forward and backward function of browser, but may be little of us know the real algorithm of it. In a recent project, I have to simulate a forward-backward function for our ajax based web application. So I spend some time on the forward-backward algorithm of Chrome.

    Below is my method :

1. open chrome browser, then visit : A, B, C web pages, so currently we are on page C.
2. click backward button, then we are currently on page B, then open a link to new page D. then click backward button, so we currently on page B.
3. now, the most point is coming, if we click backward button, we will be guided to page A, not page C.