Greasy Fork

Also this is a much snappier implimentation

var LastPlayingState = false;
window.addEventListener("focus", () => {
if (LastPlayingState) {
jwplayer().play();
}
});

window.addEventListener("blur", () => {
if (jwplayer().getState() === "paused") {
LastPlayingState = false;
} else {
LastPlayingState = true;
}
jwplayer().pause();
});

var LastPlayingState = false;
window.addEventListener("focus", () => {
if (LastPlayingState == true) {
jwplayer().play();
}
});

window.addEventListener("blur", () => {
LastPlayingState = jwplayer().getState() == "playing";
jwplayer().pause();
});

this was the first thing i tried actually, the problem is that if you click away from the iframe on the hianime page, it pauses and if you click on it again, it unpauses.

this is why i didnt use it.