April 2018
Intermediate to advanced
284 pages
6h 43m
English
Content preview from Serverless Web Applications with React and Firebase
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Client app setup to receive notifications
To allow your app to receive notifications in your browser, it will have to get permissions from the user. To do so, we will add a piece of code that will show a consent dialog to let the user grant your app permission to receive notifications in your browser.
We will add the componentWillMount() method to our index.jsx file present under the home directory, since we want to show the dialog once the user is successfully logged in to the app:
componentWillMount() { firebase.messaging().requestPermission() .then(function() { console.log('Permission granted.'); // you can write logic to get the registration token // _this.getToken(); }) .catch(function(err) { console.log('Unable to get permission to ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.