The request itself appears to the user as a pop-up dialog. how does Telegram (or any other web app) request (or configure, or set up) background notifications?Īnswer: The web page (via Javascript?) requests permission to display notifications. Question: How is it possible for a website that was loaded in the past, but is not loaded at present, to cause my computer to display notifications?Īnswer: Notifications happen in the browser itself, not in any particular web page. Their answers helped me find the exact answers I was looking for.
My thanks to user0 and arieljannai for their answers. I find it scary that notifications can still occur after I have closed the Telegram tab. Is there any way (in the browser, not the app) to disable background notifications while still allowing foreground notifications? So, my question is, how does Telegram (or any other web app) request (or configure, or set up) background notifications? Where is the documentation on how these notifications work in the web browser? However, I now suspect that Background notifications are what happens when no Telegram tabs are open.Īlso, in the Settings for Chromium itself, I can see that I have Allowed notifications for. There is no documentation that explains the difference between Desktop and Background notifications. The Settings pop-up for the Telegram web app has the following options: Desktop notifications (on/off) I am running Chromium on Ubuntu 18.04, but I have observed this with a previous version of Ubuntu such as 16.04 and/or 14.04. How is it possible for a website that was loaded in the past, but is not loaded at present, to cause my computer to display notifications? The Telegram web client (at ) can send me notifications even when no web page is loaded into any open tab in my Chromium web browser.
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