Performance is a hugely important area of web development. If your site runs slowly users are
going to leave and the problem only grows as your site gets more popular. Pro JavaScript
Performance gives you the tools you need to keep your sites smooth and responsive no matter how
many users you have. Best practices are changing or becoming redefined continually because of
changes and optimizations at the interpreter level and differences in system configuration
and network speeds. This is exacerbated by the quickened release schedule that most browsers
have adopted. Just as important as following best practices is the ability to measure your own
performance so that you can adjust as times change and so that you can note the subtle
nuances in your own code and define your own best practices by your own observations. This book
gives you the tools to observe and track the performance of your web applications over time
from multiple perspectives so that you are always aware of and can fix all aspects of your
performance.
