<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Lifecycle</title> | |
<script> | |
let frozenness = 0; | |
document.addEventListener("freeze", function() { | |
frozenness += 1; | |
}); | |
document.addEventListener("resume", function() { | |
frozenness -= 1; | |
}); | |
</script> | |
</head> | |
<body> | |
</body> | |
</html> |