核心提示：Web Notification Demo以下代码需要放在web容器中运行!!DOCTYPE htmlhtmlheadtitleWeb notification/title/headbodyscrip...
Web Notification Demo
以下代码需要放在web容器中运行!
<!DOCTYPE html>
<html>
<head>
<title>Web notification</title>
</head>
<body>
<script type="text/javascript">
var NotificationHandler = {
isNotificationSupported: 'Notification' in window,
isPermissionGranted: function() {
return Notification.permission === 'granted';
},
requestPermission: function() {
if (!this.isNotificationSupported) {
console.log('the current browser does not support Notification API');
alert('the current browser does not support Notification API');
return;
}
Notification.requestPermission(function(status) {
//status是授权状态，如果用户允许显示桌面通知，则status为'granted'
console.log('status: ' + status);
alert('status: ' + status);
//permission只读属性
var permission = Notification.permission;
//default 用户没有接收或拒绝授权 不能显示通知
//granted 用户接受授权 允许显示通知
//denied 用户拒绝授权 不允许显示通知
console.log('permission: ' + permission);
alert('permission: ' + permission);
});
},
showNotification: function() {
if (!this.isNotificationSupported) {
console.log('the current browser does not support Notification API');
return;
}
if (!this.isPermissionGranted()) {
console.log('the current page has not been granted for notification');
return;
}
var n = new Notification("sir, you got a message", {
icon: 'qq-weibo.png',
body: 'you will have a meeting 5 minutes later.'
});
//onshow函数在消息框显示时会被调用
//可以做一些数据记录及定时操作等
n.onshow = function() {
console.log('notification shows up');
//5秒后关闭消息框
setTimeout(function() {
n.close();
}, 5000);
};
//消息框被点击时被调用
//可以打开相关的视图，同时关闭该消息框等操作
n.onclick = function() {
alert('open the associated view');
//opening the view...
n.close();
};
//当有错误发生时会onerror函数会被调用
//如果没有granted授权，创建Notification对象实例时，也会执行onerror函数
n.onerror = function() {
console.log('notification encounters an error');
//do something useful
};
//一个消息框关闭时onclose函数会被调用
n.onclose = function() {
console.log('notification is closed');
//do something useful
};
}
};
window.onload = function(){
console.log(NotificationHandler);
NotificationHandler.requestPermission();
NotificationHandler.showNotification();
}
</script>
</body>
</html>
