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<!-- Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ -->
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />
<title>Network Observer test page</title>
</head>
<body>
<p>Network Observer test page</p>
<script type="text/javascript">
/* exported registerServiceWorker, unregisterServiceWorker */
"use strict";
let swRegistration;
function registerServiceWorker() {
const sw = navigator.serviceWorker;
return sw.register("serviceworker.js")
.then(registration => {
swRegistration = registration;
console.log("Registered, scope is:", registration.scope);
return sw.ready;
}).then(() => {
// wait until the page is controlled
return new Promise(resolve => {
if (sw.controller) {
resolve();
} else {
sw.addEventListener("controllerchange", function () {
resolve();
}, { once: true });
}
});
}).catch(() => {
console.error("Registration failed");
});
}
function unregisterServiceWorker() {
return swRegistration.unregister();
}
</script>
</body>
</html>
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