如何监听Web通知权限更改 [英] How to listen for web notification permission change

问题描述

根据 Notification.permission 规范MDN，我们可以检查当前用户对Web通知的权限。

According to the Notification.permission spec from MDN, we can check the current user permission for web notification.

但是，有没有办法听取此权限更改？这样的事情？

However, is there any way to listen for this permission change? Something like this?

.on(Notification.permission, 'changed', function(){ }

推荐答案

我认为答案有点晚，但是......你可以使用这个。

I believe it's a little late for an answer, but... You can use this.

var Notification = window.Notification || window.mozNotification || window.webkitNotification;

var was_questioned = false;
if (Notification.permission == 'default') {
    was_questioned = true;
}

Notification.requestPermission(function (permission) {
    if (was_questioned) {
        console.log("User was asked. New permission is: " + permission);
    }
    if ('permissions' in navigator) {
    navigator.permissions.query({name:'notifications'}).then(function(notificationPerm) {
        notificationPerm.onchange = function() {
            console.log("User decided to change his seettings. New permission: " + notificationPerm.state);
        };
    });
    }
});

这篇关于如何监听Web通知权限更改的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！