Change Details

Certain firewalls / proxies strip CORS Allow-Origin headers ([[ http://www.garysieling.com/blog/dont-use-access-control-allow-origin | example ]]); measure how many users are affected by this: - create a test script which sets some global variable - before DOM ready, add a script tag pointing to that script with crossorigin="anonymous" - after DOM ready, check the global variable; report back if not set.

Certain firewalls / proxies strip CORS Allow-Origin headers ([[ http://www.garysieling.com/blog/dont-use-access-control-allow-origin | example ]]); measure how many users are affected by this: - create a test script which sets some global variable - before DOM ready, add a script tag pointing to that script with crossorigin="anonymous" - after DOM ready, check the global variable; report back if not set. ---- **Results:** CORS-enabled loading of script files causes loading failure in about 0.1%-0.15% of the sampled pageviews.

Certain firewalls / proxies strip CORS Allow-Origin headers ([[ http://www.garysieling.com/blog/dont-use-access-control-allow-origin | example ]]); measure how many users are affected by this: - create a test script which sets some global variable - before DOM ready, add a script tag pointing to that script with crossorigin="anonymous" - after DOM ready, check the global variable; report back if not set. ---- **Results:** CORS-enabled loading of script files causes loading failure in about 0.1%-0.15% of the sampled pageviews.