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What's banned is marking a data page as executable (which happens to be required if you want to build a competitive javascript engine). The practical upshot of
by danielheath 4y ago
What's banned is marking a data page as executable (which happens to be required if you want to build a competitive javascript engine).
The practical upshot of this is that nobody has bothered porting a browser engine to iOS, since it's javascript performance would be unacceptably slow.