gecko-dev/dom/tests/browser/perfmetrics/ping_worker.html

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HTML

<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<script type="text/javascript">
var myWorker;
var shared;
function init() {
myWorker = new Worker('ping_worker.js');
for (let i = 0; i++; i < 10) myWorker.postMessage("ping");
shared = new SharedWorker('shared_worker.js');
shared.port.start();
shared.port.onmessage = function(e) {
console.log(e);
}
}
</script>
</head>
<body onload="init()">
<h1>A page with a worker and a shared worker</h1>
</body>
</html>