documentcloud/backbone — comment on commit 83d2918bc71f6ec8e3f64718d445760605908951
File:  line 0
By jashkenas:

For better or for worse, Backbone targets JS that runs cross-platform -- including IE7 and IE8 (and arguably, IE6). Given that MS is never shipping IE9 for XP, and XP doesn't look like it's going anywhere in the next 5 years ... I think we have to keep DontEnum bugs in mind, and not rely on functionality that depends on them not existing.