如果沒有效果，請開啓瀏覽器的消息通知權限。 下面上代碼
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
</head>
<body>
<button id="button">有人想加你爲好友</button>
<p id="text"></p>
</body>
<script type="text/javascript">
if (window.Notification) {
var button = document.getElementById('button'), text = document.getElementById('text');
var popNotice = function() {
if (Notification.permission == "granted") {
var notification = new Notification("Hi，帥哥：", {
body: '可以加你爲好友嗎？',
icon: 'https://s2.ax1x.com/2019/08/19/m3hgYj.jpg'
});
notification.onclick = function() {
text.innerHTML = '張小姐已於' + new Date().toTimeString().split(' ')[0] + '加你爲好友！';
notification.close();
};
}
};
button.onclick = function() {
if (Notification.permission == "granted") {
popNotice();
} else if (Notification.permission != "denied") {
Notification.requestPermission(function (permission) {
popNotice();
});
}
};
} else {
alert('瀏覽器不支持Notification');
}
</script>
</html>