Javascript implementations do not use hash tables for objects. Yes, it is surprising. https://stackoverflow.com/questions/6586670/how-does-javascript-vm-implem

Javascript implementations do not use hash tables for objects. Yes, it is surprising. https://stackoverflow.com/questions/6586670/how-does-javascript-vm-implements-object-property-access-is-it-hashtable https://stackoverflow.com/questions/6586670/how-does-javascr... And when jit kicks in, it does all the usual calculate-the-offset things in generated code.