Doing it, then doing right and finally improving. Have you ever had the feeling that your jQuery could run faster? And isn’t that the natural evolution of a developer? From new browser features and well known techniques to script breakup, sizzling, chaining and selector comparison... Tuning of any technology requires deep understanding of its core principles. In order not to just guess we need to learn how browsers execute JavaScript and how jQuery is built. If these issues have been bothering you recently – join us to see how or share your experience.