Chrome desktop notification example
Two types of notifications exist in modern browsers:
- Desktop Notifications - easy to trigger, active as long as the page is open, and may automatically disappear after a few seconds.
- Service Worker Notifications - A bit complex, but they work in the background (even after the page is closed), are persistent and support action buttons.
API calls take the same parameters (except for actions - not available in desktop notifications), which are well documented on MDN and, for service workers, on Google's Web Fundamentals site .
Here is a working example of a desktop notification for Chrome, Firefox, Opera and Safari. Note that for security reasons, starting with Chrome 62, notification API permissions may no longer be requested from the cross-origin framework, so we cannot demonstrate this using a code snippet from StackOverflow. You need to save this example in the HTML file of your website/application and make sure to use localhost:// or HTTPS.
<code class="js">// 在頁面加載時請求權限
document.addEventListener('DOMContentLoaded', function() {
if (!Notification) {
alert('Desktop notifications not available in your browser. Try Chromium.');
return;
}
if (Notification.permission !== 'granted')
Notification.requestPermission();
});
function notifyMe() {
if (Notification.permission !== 'granted')
Notification.requestPermission();
else {
var notification = new Notification('Notification title', {
icon: 'http://cdn.sstatic.net/stackexchange/img/logos/so/so-icon.png',
body: 'Hey there! You\'ve been notified!',
});
notification.onclick = function() {
window.open('http://stackoverflow.com/a/13328397/1269037');
};
}
}</code>
<code class="html"><button onclick="notifyMe()">Notify me!</button></code>
The above is the detailed content of How to Implement Desktop Notifications in Modern Browsers?. For more information, please follow other related articles on the PHP Chinese website!
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