There has been a lot of discussion of Function.prototype.toString on this and the es5-discuss lists. Basically we didn't reach any consensus on what it should do so there was no change for ES5. The subject can be reopened for ES Harmony.
Allen >-----Original Message----- >From: [email protected] [mailto:es-discuss- >[email protected]] On Behalf Of James Graham >Sent: Friday, August 28, 2009 6:41 AM >To: [email protected] >Subject: toString of anonymous function > >The text in 15.3.4.2 Function.prototype.toString () says: > >"An implementation-dependent representation of the function is returned. >This representation has the syntax of a FunctionDeclaration" > >Is there a reason this is a FunctionDeclaration rather than a >FunctionExpression? In particular what is the expected behavior for >toString of an anonymous function? > >var f = function() {} >f.toString() > >In the engines I tried this gave a result like > >"function () {}" > >with only whitespace differences. This doesn't match the >FunctionDeclaration production due to the lack of an identifier. Whilst >the engine could invent an identifier, I don't see what the advantage >would be and I would be worried about breaking existing code by doing >so. Instead, I think it would be nice to align the spec with reality >here. >_______________________________________________ >es-discuss mailing list >[email protected] >https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
