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<!DOCTYPE HTML>
<html>
<head>
<script>
function init() {
if (location.search == "") {
let bc1 = new BroadcastChannel("bc1");
bc1.onmessage = function(e) {
if (e.data == "loadNext") {
location.href = location.href + "?page2";
} else if (e.data == "forward") {
bc1.close();
history.forward();
}
};
window.onpageshow = function() {
bc1.postMessage("pageshow");
};
} else {
document.body.innerHTML = "<video controls src='owl.mp3' autoplay>";
let bc2 = new BroadcastChannel("bc2");
bc2.onmessage = function(e) {
if (e.data == "back") {
history.back();
} else if (e.data == "statistics") {
bc2.postMessage({ currentTime: document.body.firstChild.currentTime,
duration: document.body.firstChild.duration });
bc2.close();
window.close();
}
}
window.onpageshow = function(e) {
bc2.postMessage({ event: "pageshow", persisted: e.persisted});
if (!e.persisted) {
// The initial statistics is sent once we know the duration and
// have loaded all the data.
let mediaElement = document.body.firstChild;
mediaElement.onpause = function() {
mediaElement.onpause = null;
mediaElement.currentTime = 0;
mediaElement.onplay = function() {
setTimeout(function() {
bc2.postMessage({ currentTime: mediaElement.currentTime,
duration: mediaElement.duration });
}, 500);
}
mediaElement.play();
}
}
};
}
}
</script>
</head>
<body onload="init()">
</body>
</html>