Is it up to date? Does it have
proper examples?
Luckily, as more and more people develop on top of these libraries, more examples will
make their way onto the Internet, and the documentation will be added to. JavaScript libraries
are almost always open-source projects that invite you to contribute to the active development
of the library.
Summary
You discovered that the field is ripe for the picking, with any number of JavaScript libraries
that might be well suited for your next project. It??™s not necessary to reinvent the wheel each
time. The libraries mentioned in this chapter are popular, which means they are getting used
by thousands (even millions) of people, and that kind of quality assurance is hard to beat if
you??™re continually starting from scratch. This will save plenty of time, not only in the development
of consistent cross-browser code but also with the bug testing and maintenance of such.
Each library has its strengths and weaknesses, and picking the right tool for the job can sometimes
be half the battle.
Next up, you??™ll look at Ajax and after that Visual Effects. In both chapters and the case
studies to follow, you??™ll see the topic of JavaScript libraries come up again and see some great
examples of how they can be applied to a project.
CHAPTER 4 n LIBRARIES 98
Ajax and Data Exchange
If you??™ve heard the term used only casually, you might have pondered whether Ajax has simply
become the new word for JavaScript.
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