Web Apocrypha

Dynamic languages like JavaScript have a lot of interesting fetures: we can create or destroy new classes during runtime or assign anything to any variable regardless of its type. These features makes them popular and since computers are getting faster, more and more tasks are performed by these languages. The fact that a language is dynamic does not necessarily mean that programs written in it have to be slow. Perhaps they will never be as fast as a compiled language, but there are some nice optimization algorithms for them. Those algorithms are different form static compiler optimizations.