Things to consider before settling on a JavaScript Library or jQuery plugin for your project

In the article, Which JavaScript Library Should I Pick?, Pamela Fox has listed some practical points to consider before you settle on a JavaScript Library (or a jQuery plugin) for your project. Here is a summary check-list based on her article:

* Will it be a good developer experience?
* Well documented
* Flexible
* Responsive community
+ Number of forks
+ Number of issues
+ Vibe on issues
+ External community
* Actively maintained
* Future thinking
* Tested
* Clean code
* Will it be a good user experience?
* File size
* Performance
* Browser support
* Accessibility
* Responsive

To me, good documentation (including samples) and visibility on StackOverflow are the most important factors.