June 2012
Intermediate to advanced
386 pages
10h 7m
English
Content preview from Web Technology: Theory and PracticeBecome 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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4.20 JAVASCRIPT SECURITY
A web browser is a complex piece of software, and JavaScript is a powerful scripting language. It is no surprise that the intersection between these elements will be far too complex. On the flip side, it offers potential security holes. However, there are certain precautions that the language itself tries to provide.
The window object allows a lot of control to the JavaScript programmer.
4.20.1 File Handling and Execution
JavaScript cannot read files from the file server (except for cookies). Similarly, it cannot write any file into the file system (except through server-side programs). Likewise, it cannot execute any program in the file system.
4.20.2 Same Origin Policy
This security policy applies to client-side scripting ...
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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.