February 2018
Intermediate to advanced
298 pages
8h 22m
English
Content preview from Learn ECMAScript - Second Edition
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Same origin policy
Earlier, I said a couple of times that shared workers will be available only to those parent files which share the same origin. What does that mean?
Let us consider the URL http://www.packtpub.com/all.
Here's a table demonstrating which URLs will be of the same origin with this domain, and which won't be:
| New URL | Same Origin | Reason |
| http://www.packtpub.com/support | Yes | - |
| http://www.packtpub.com/account/abc/xyz | Yes | - |
| https://www.packtpub.com/all | No | Different protocol |
| http://username:password@www.packtpub.com/all | Yes | - |
| http://www.packtpub.com:8000/somepage | No | Different port number |
| http://packtpub.com/somepage | No | Different host |
| http://dev.packtpub.com/somepage | No |
Different host |
By now, I believe that ...
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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.