History of PerformanceObserver.observe() Revision history for: English (US) Aug 11, 2016, 3:13:55 PM jpmedley Previous Aug 11, 2016, 3:02:49 PM jpmedley Previous Jun 13, 2016, 6:18:47 AM teoli Previous Jun 13, 2016, 6:09:12 AM teoli + bug 1271487 Previous Feb 29, 2016, 5:57:31 PM rolfedh Previous Dec 1, 2015, 6:11:27 PM AFBarstow Fix typo Previous Dec 1, 2015, 6:03:37 PM AFBarstow Dec 1, 2015, 6:03:00 PM AFBarstow New reference page for the PerformanceObserver.observe() method (defined in Performance Timeline Level 2)