November 2001
Intermediate to advanced
936 pages
68h 43m
English
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Chapter 20. Compatibility Techniques
JavaScript, like Java, is one of a new breed of platform-independent languages. That is, you can develop a program in JavaScript and expect to run it unchanged in a JavaScript-enabled web browser running on any type of computer with any type of operating system. Though this is the ideal, we live in an imperfect world and have not yet reached that state of perfection.
There are, and probably always will be, compatibility problems that JavaScript programmers must bear in mind. The one fact that we must always remember is that it is a heterogeneous network out there. Your JavaScript programs may run on three or more operating systems, using three or more versions of browsers from at least two different vendors. This can be difficult to keep in mind for those of us who come from the nonportable past, when programs were developed on a platform-specific basis. Remember: which platform you develop a program on doesn’t matter. It may work fine on that platform, but the real test is whether it works (or fails gracefully) on all platforms on which it is used.
The compatibility issues fall into two broad categories: platform-specific, browser-specific, and version-specific features on one hand; and bugs and language-level incompatibilities, including the incompatibility of JavaScript with non-JavaScript browsers, on the other. This chapter discusses techniques for coping with compatibility issues in both of these areas. If you’ve worked your way through ...
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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.