facebook/react — pull request #1659 by spicyj (2014-06-08 01:51:26+00:00)
Title: Fix EnterLeaveEventPlugin-test in IE10

Previously this was failing because iframeDocument.body wasn't properly initialized. Creating the document this way seems to work in all environments

Test Plan: Ran the test in jest, phantomjs, IE10, Chrome, and Firefox.