<!DOCTYPE html>
<html>
<head>
<title>Service workers</title>
</head>
<body>
<center>
<h1>Service workers</h1>
<img src="jaischool.png">
</center>
<script>
window.onload = function()
{
if(navigator.serviceWorker)
{
alert("Your Browser supports service Worker");
}
else{
document.write("Please update your Browser");
}
}
</script>
</body>
</html>
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