Le 27/04/2011 19:38, Sean Eagan a écrit : > Hi, > > The "get" and "set" traps currently have both "receiver" and "proxy" > arguments. This is because it has been suggested that they are not > the same in the case of property access on a receiver causing a > [[Get]] / [[Put]] call to propogate up the prototype chain to a proxy. The case when they are not the same is when the proxy is in the prototype chain (regardless of what kind of object is "underneath"). See the third example at: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Proxy#Common_mistakes_and_misunderstanding The proxy object is on the prototype chain and in the "get" trap, "rcvr" is the "base object" while the third optional proxy argument is the proxy prototype object.
David _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
