Or never? I can't shake the feeling that strict mode is a sop to people with minority opinions, but which will end up shaping the future of ES going forward.
-- Yehuda On Fri, Sep 25, 2009 at 9:01 PM, Mark S. Miller <[email protected]> wrote: > On Fri, Sep 25, 2009 at 2:24 PM, Charles Jolley <[email protected]> wrote: >> PS. Is there an official way to detect that I am running code in ES5 strict >> mode? I can't find it in the spec. > > To summarize: > > A conventional pattern for testing "Am I in >= ES5 strict mode?" is > > if (function(){return this;}()) { > // I am not in strict mode > } else { > // I am in strict mode, and therefore in >= ES5 > } > > A conventional pattern for testing "Am I in >= ES5?" is > > if (function(){"use strict";return this;}()) { > // I am in < ES5 > } else { > // I am in >= ES5 > } > > For these to work, it is important that browser makers rolling out ES5 > features incrementally not cause the ES5-sides of these tests to > succeed until their ES5 system is complete. In other words, much as it > pains me to suggest this, please implement strict mode last. > > > -- > Cheers, > --MarkM > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > -- Yehuda Katz Developer | Engine Yard (ph) 718.877.1325 _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
