PWAs are secure and installable, can run offline and can display system notifications even when the app is not running. [+]
How to have a normal website and also let it appear as a traditional application or native mobile application? Want to write apps that are powered by Web technologies and delivered with Web infrastructure? Welcome to Progressive Web Apps. PWAs are secure and installable, can run offline and can display system notifications even when the app is not running. This course will teach all the techniques to create, test and deploy your PWA.
Course will be updated regularly to keep up with the latests developments.
We’ll cover basic syntax as well as useful new additions to the language. Most notable:
Variable declarations with let, var and const
Class syntax, incl. methods, inheritance, etc.
Default parameters in functions
for..of loops and iterators
Promises and async/await asynchronous function handling
Rest and Spread operators for quick array and object manipulations
Maps (key-value pairs) and Sets (unique values)
Progressive Web Apps
Progressive Web Apps (PWA) is a set of technologies you can use to enhance a website with application behaviour:
Installable: The website can be added to the home screen of the device.
Web App Manifest: Defining the icon, home screen title, splash screen, background color and home page.
Fetch: Simple and powerful API to fetch resources (successor of XMLHttpRequest).
Offline and online behaviour: No matter if there is a network connection, the app will work using Service Workers to control requests and storing responses to requests offline using the Cache API, Web Storage or IndexedDB.
Notifications. Send updates from the server to the app with the Push API and use the Notification API to generate system notifications even if the app is not running.
Safe: Only https (or localhost for development).
Progressive: Use the above technologies if they are available, but the page (app) will work if the device’s browser is less capable.
PWA can even be published to the Microsoft Store and become Windows Apps.
Data storage within the browser are covered with 3 techniques:
Storage API, Local & Session storage when you don’t want to store too much data.
IndexedDB API (version 2), is an object database with more capacity.
Cache API for use with Progressive Web Apps.
Compression and minification.
To inline or not to inline?
Async loading of scripts.
How to measure performance?
Debugging & Testing
Explaining how to use the developer tools in the browser:
Setting breakpoints in code or when events happen
Debugging Service Workers
Writing unit tests