Demystifying JS Engines

How a JavaScript engine works? What are its basic components? How to measure its performance? What is JIT compilation? Stigmatization: is JavaScript fast enough? are some of the questions I think we currently fail to answer in a, somewhat, short and direct way.
Length: 18:16
Views 171 Likes: 6
Recorded on 2016-08-03 at CascadiaFest
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JIT SpiderMonkey JavaScript