notifications/index.html at main · DmitryMilk/notifications · GitHub

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<!DOCTYPE HTML>
<html>
<head>
<script>

function writeLog(message) {
    console.log(message)
    loggingArea.value += message + '\n'
}

function notify(message, tag) {
    if ( ! ("Notification") in window ) {
        writeLog("Notifications not supported")
        return
    }

    if ( Notification.permission === "denied" ) {
        writeLog("Notifications denied by user")
        return
    }

    if ( Notification.permission === "granted" ) {
        const notification = new Notification(message, {tag: tag})
        notification.addEventListener("close", (event) => {
            writeLog(`Notification '${tag}' closed`)
        })
    } else {
        Notification.requestPermission().then(() => {
            notify(message, tag)
        })
    }
}

function scheduleNotificaion(message, tag, timeout) {
    setTimeout(
        () => {
            notify(message, tag)
        },
        3000
    )
    writeLog(`Notification '${tag}' scheduled`)
}

</script>
</head>
<body>
<button onclick="notify(`Greetings at ${Date()}!`)">Greet me!</button>
<button onclick="notify('Unique notification', 'unique1')">Unique notification</button>
<button onclick="scheduleNotificaion('Deferred notification', 'deferred1', 3000)">Notify me after 3 seconds!</button>
<br />
<br />
<textarea id="loggingArea" cols="120" rows="20" readonly></textarea>
<br />
<button onclick="loggingArea.value=''">Clear log</button>
</body>
</html>