Hour 19. Making Life Easier with Libraries
What You’ll Learn in This Hour
• Why using a library can be a good idea
• The sorts of things libraries can help you do
• Library extensions from the user community
• Introducing some popular libraries
• A quick overview of prototype.js
Libraries are reusable collections of JavaScript code that let you do complicated things by adding only a few lines of extra code to your program.
You already built a simple library for Ajax in Hour 17, “Creating a Simple Ajax Library.”
There are many freely available JavaScript libraries that can help you quickly develop capable, cross-browser applications.
Several of the more popular libraries are introduced in this hour.
Why Use a Library?
You’ll often see opinions ...
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