On IE11 when you get the user prompt
Only secure content is displayed. #Show all content#
the readyState is never changing, it is always on loading and the events do not fire either. Once the user clicks Show all content it works fine.
Unfortunately I have a site where I can't resolve the non SSL scripts and images (third party sites and user content) and it is fine if it isn't loaded, but I need the DOMContentReady event for important and securely loaded JS. Are you aware of any workaround?
You can use protocol-less uri's in your web pages. eg. //cdn.com instead of http://cdn.com .
to list blocked content and security errors in the dev tool console first go Tools>Internet Options>Advanced tab, check "Always record developer console messages". Save changes. Navigate to your web site. 1. File>Properties menu will tell you which IE security zone the host maps to (expected internet/intranet or mixed if there are both http and https)... also the protocol its using: http(s). 2. F12>Console tab, security warnings and errors are now listed.