November 2011
Intermediate to advanced
384 pages
13h 23m
English
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REQUEST USER PERMISSION TO DISPLAY DESKTOP NOTIFICATIONS
Before you can display a Desktop Notifications API pop-up window in Chrome, you must request permission from the user using an infobar. An infobar is a subtle slide-down prompt that appears underneath the URL bar and asks the user a question. The user must grant permission for your web app to use the API; otherwise, all other desktop notification calls will be ignored.
This ensures that the user actually wants the desktop notification feature active, avoiding the problems associated with rampant abuse of unwanted pop-up windows in the late 1990s and early 2000s.
Although you can call the checkPermission() method at any time, you can call requestPermission() only on a click event performed ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.