Javascript single page app 1 instance of a class accessible by all pages -

I have a question about JavaScript single page app. Suppose I have a class that requires the recovery and storage of values ​​from different pages in that class.

Example: After clicking on a button on page A, data is collected in that class, we will now run on page B, where we store additional data in the same class, stored by page A. Without losing data

I am using javascript, beaten and php / mysql as backend. / P>

Is this possible? If so, what are the prospects, frameworks? Or am I saying here impossible?

Thanks,

Regards,

Eric