On 4/28/15 2:13 AM, Glen Huang wrote:
On second thought, if the list returned by getElementsByClass() is lazy populated as Boris says, it shouldn't be a problem. The list is only updated when you access that list again.
Mutations have to check whether the list is marked dirty already or not.This is not too bad if you only have a few lists around, but if you have several thousand it can start to hurt.
-Boris
