July 2018
Intermediate to advanced
354 pages
8h 51m
English
Content preview from Progressive Web Application Development by Example
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Service worker scope
As mentioned earlier, service workers are limited to a single domain. The domain is your site's address, such as https://podcast.love2dev.com/. This is a security feature. Limiting a service worker is known as the service worker's scope. This prevents external scripts from doing bad things to your site.
Imagine if your customer also visits your competition's web site, which installs a service worker. Without limits on service worker scope, they could conceivably manipulate your content or spy on you and your customer's private data.
In fact, a third-party script cannot register a service worker from a page on your site. This should keep external scripts and service providers from using service workers in conjunction with ...
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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.
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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.