It may have been deliberate to 'duck type' or allow Array-like objects. An instanceof test would be the only accurate test, but it may (or may not) be helpful to handle user-created objects as Arrays, or other things like NodeList, which seems to have its own special handling.
-Adam On Sat, Jan 3, 2009 at 12:52 PM, Brian Di Palma <[email protected]> wrote: > Which explains why the Object is not being taken as an Array. > > typeof obj.splice === 'function' > > that condition is failing. Correctly too an object is not an Array. > > On Sat, Jan 3, 2009 at 4:54 PM, John J Barton <[email protected]> > wrote: >> >> Sorry, I was just trying to summarize. The actual test is: >> if (isFinite(obj.length) && typeof obj.splice === 'function') >> >> jjb >> >> On Jan 3, 8:22 am, "Brian Di Palma" <[email protected]> wrote: >> > That's not an Array it's an object. For a native Array length is >> > controlled >> > for you and splice() is provided to you. >> > >> > [] === Array >> > >> > {} === Object >> > >> > On Sat, Jan 3, 2009 at 7:03 AM, Garrett Smith >> > <[email protected]>wrote: >> > >> > >> > >> > > On Fri, Jan 2, 2009 at 9:28 PM, John J Barton >> > > <[email protected]> wrote: >> > >> > > > Any Javascript object with 'length' and 'splice' should format as an >> > > > array. If not please report a bug. >> > >> > > Using Firebug 1.2.1, an object with properties |length| and |splice| >> > > is not formatted the same as an Array. >> > > Example: >> > > >>> ({splice:1, length:2, '0':0, '1':1, '2':2}) >> > > Object splice=1 length=2 >> > > >>> [0,1,2] >> > > 0,1,2 >> > >> > > Please describe how an array is to be formatted so that a bug can be >> > > filed. >> > >> > > Thanks, >> > >> > > Garrett >> > >> > > > jjb >> > >> > > > On Jan 2, 11:09 am, Danny <[email protected]> wrote: >> > > >> Thanks; that makes sense. But Firebug also changed the way it >> > > >> displays >> > > >> true arrays. Arrays of simple types like [1,2,3] are listed; arrays >> > > >> that contain objects are displayed as "Object". console.dir() >> > > >> helps, >> > > >> but it was nice to have it all in one line. >> > >> > > >> Danny >> > >> > > >> On Jan 2, 12:46 pm, John J Barton <[email protected]> >> > > >> wrote: >> > >> > > >> > jQuery('div') is not an array. It has length but not splice. So >> > > >> > Firebug does not format it as an array. >> > >> > > >> > In Javascript, the line between what is an array and what is not >> > > >> > an >> > > >> > array is unclear. After many versions the current test in >> > > >> > Firebug >> > > >> > requires an array to have 'length' and 'splice'. Earlier versions >> > > >> > of >> > > >> > Firebug only required 'length', but that caused some objects to >> > > >> > be >> > > >> > formatted as arrays that did not have numerical indexes. >> > >> > > >> > jjb >> > >> > > >> > On Jan 1, 10:10 pm, Danny <[email protected]> wrote: >> > >> > > >> > > Has anyone else using jQuery noticed that Firebug before 1.2 >> > > >> > > would >> > > >> > > treat console.log(jQuery('div')) as an array and list all the >> > > matched >> > > >> > > elements on the console, so you could mouse over the list and >> > > >> > > highlight the elements, or right-click and scroll into view >> > > >> > > etc., >> > > but >> > > >> > > now it just lists "Object length=13" and you need to click on >> > > >> > > that, >> > > >> > > then you get a vertical list that you need to scroll through. >> > > >> > > The >> > > old >> > > >> > > way was more helpful, I think. >> > >> > > >> > > Workaround: console.log.apply(console, jQuery('div').get()) >> > > >> > > comes >> > > >> > > close to reproducing the old behavior. >> > >> > > >> > > I'll crosspost this on the jQuery list. >> > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Firebug" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/firebug?hl=en -~----------~----~----~----~------~----~------~--~---
