No, there isn't a way to do exactly what you want. Even the built-in session restore will only restore form fields (and some other selected things), but not the full JS and native object state.
Implementing something like this yourself not feasible (and would be also a massive task):
- You could
uneval()
most js objects, but that will loose type information and you'll only get the source, but not any internal state (think "hidden" state via closures). Native objects likewindow
ordocument
need some special treatment, and getting the internal state isn't exactly always possible here without some C++-level "reflection". - You could potentially get a lot of the actual state using the debugger API in new ways, however I don't see any way to actually restore it later. And "a lot" is still not the same as "all".
About the closed-over "hidden" state:
There is no way I know of to reliably get the internal state of counter
in the following example, let alone restore it later, without getting as low-level as a platform-dependent full memory dump.
var count = (function() {
var counter = 0;
return function() { return ++counter; };
})();
count();
count();