How to track the visibility of the player

In the PRO you can get the precent of the real player visibility for the user at the moment Plugins / API / Track the visibility

JS API request

player.api("visibility");

In response the player will send the percentage of visibility.

You can also track to the event visibility

function PlayerjsEvents(x,y,z){
   if(x=="visibility"){
      console.log("Видимость",z);
   }
}

Tracking visibility works even when the player is inside an iframe and is loaded from another domain.