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How many javascript virtual machine instances will be created by the browser? Does it create instances on a per-page basis? Or does it use only one instance across different pages?
It varies per browser, I believe. – GregL Feb 15 at 7:26
Although, a script in one page affecting another script from a whole different tab…that’d seem to run counter to everything they’re trying to do securitywise. – cHao Feb 15 at 7:28
This is very much implementation-dependent. Read documentation of individual implementation would help.