22617 2013-07-09 15:45:47 +0000 NamedFlowCollection item and namedItem should return null 2013-07-11 19:02:49 +0000 1 1 1 Unclassified CSS Regions unspecified All All RESOLVED FIXED P2 normal --- 1 erik.arvidsson stearns eoconnor stearns public-css-bugzilla oldest_to_newest 90486 0 erik.arvidsson 2013-07-09 15:45:47 +0000 For consistency with all other dom collections. Maybe you were confused by the following asserts which passes for all dom collections? assert(collection.item(42) === null); assert(collection.namedItem('foobar') === null); assert(collection[42] === undefined); assert(collection['foobar'] === undefined); 90505 1 stearns 2013-07-09 19:51:52 +0000 I previously changed from null to undefined based on Boris Zbarsky's recommendation: http://lists.w3.org/Archives/Public/www-style/2012Aug/0871.html 90642 2 stearns 2013-07-11 19:02:49 +0000 Undid the undefined change. Now the collection methods return null on a miss. https://dvcs.w3.org/hg/csswg/rev/5c1cbb9d3749