How does it know my Java and Flash versions when I have click to play set?

Someone · on March 9, 2014

Probably from JavaScript. See https://developer.mozilla.org/en-US/docs/Web/API/NavigatorPl... and, from there, https://developer.mozilla.org/en-US/docs/Web/API/Plugin. Your browser cannot hide extensions from that list because web sites might use it to decide whether to show you their plugin-based content.

UnoriginalGuy · on March 9, 2014

swfobject.getFlashPlayerVersion();