Phone Interview(HR): A discussion about my resume, past jobs. I told them I have recently started working on Javascript and still in the process of learning.
Phone Interview(T1): Was asked basic questions about prototype, variable scope, JSON. Interviewer seemed satisfied and invited me to their Bangalore office for F2F
F2F Interview(T2): Very tough questions on the inner workings of the language, V8 Engine. Could answer only a few of them. Was asked a few logic puzzles which were quite standard.