Isn't this good enough ? IE = !!document.attachEvent;
On Tue, Jan 13, 2009 at 3:00 PM, kangax <kan...@gmail.com> wrote: > > On Jan 13, 10:17 am, Diego Perini <diego.per...@gmail.com> wrote: >> Kanagax, >> agree with you about "using (or not) frames" being irrelevant if the >> is objective is met. I was talking about reducing a bit the code size >> were possible, feature testing is more costly in byte size. >> >> Please tell me how a 3d party is going to create problem with those >> testing I am really interested into improve them if possible. >> >> You see, the "document.fileSize" property in IE is read-only, and it >> is of a type the user cannot create himself that I know, but would be >> very interested in how the user could create a variable of type >> "unknown", especially how to I create an "unknown" variable in FF / >> Opera / Webkit / Konqueror or mobile web browsers ??? > > Your snippet didn't test for typeof "unknown", but rather for "!= > 'undefined'". Sorry if I missed something. If a 3rd party script > defines `document.fileSize` in non-IE browser, your proposed `IE` > boolean will have a false positive: > > // run this in Firefox > document.fileSize = 1024; > IE = typeof document.fileSize != 'undefined'; > IE; // true > > [...] > > -- > kangax > > > -- Ariel Flesler http://flesler.blogspot.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "jQuery Development" group. To post to this group, send email to jquery-dev@googlegroups.com To unsubscribe from this group, send email to jquery-dev+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/jquery-dev?hl=en -~----------~----~----~----~------~----~------~--~---
