10267 2010-07-30 00:03:19 +0000 What happens if you delete an attribute? For the following test case, Chrome outputs "string undefined", while Firefox and Opera give "string string": data:text/html,<!doctype html><script>var el = document.createElement("a"); var type = typeof el.id; de 2010-10-04 14:27:39 +0000 1 1 1 Unclassified HTML WG pre-LC1 HTML5 spec (editor: Ian Hickson) unspecified Other other CLOSED INVALID http://www.whatwg.org/specs/web-apps/current-work/#reflecting-content-attributes-in-idl-attributes P3 normal --- 1 contributor ian ayg mike public-html-admin public-html-wg-issue-tracking public-html-bugzilla oldest_to_newest 37173 0 contributor 2010-07-30 00:03:19 +0000 Section: http://www.whatwg.org/specs/web-apps/current-work/#reflecting-content-attributes-in-idl-attributes Comment: What happens if you delete an attribute? For the following test case, Chrome outputs "string undefined", while Firefox and Opera give "string string": data:text/html,<!doctype html><script>var el = document.createElement("a"); var type = typeof el.id; delete el.id; alert(type + " " + typeof el.id);</script> Posted from: 68.175.61.233 37174 1 ayg 2010-07-30 00:04:18 +0000 With manual newlines/spaces so it works reliably: data:text/html,<!doctype html> <script> var el = document.createElement("a"); var type = typeof el.id; delete el.id; alert(type + " " + typeof el.id); </script> 37177 2 ayg 2010-07-30 00:44:13 +0000 I'm told this is a WebIDL issue.