Do frames and iframes have isolated javascript contexts?

Question

I\'ve made some experiments in Chrome but I\'m not sure so I need a confirmation :

Am I correct in thinking that iframes and frames have a separate JavaScript contex

Answer 1

It's not "impossible" to share values between frames, but you have to be careful. In Internet Explorer, the following scenario will result in an error:

1. Create a JavaScript object in frame A.
2. Pass the JavaScript object to a function in frame B, which saves the value somewhere (in frame B)
3. Frame A is reloaded with a new page
4. Code in frame B attempts to reference the saved object from the (former) frame A.

Internet Explorer does not like it when an object from a defunct page is referenced.