Just a nit on the JIT... JavaScript is almost always compiled, regardless of whether there is a JIT or not. A typical JavaScript system first compiles the JS s

Just a nit on the JIT... JavaScript is almost always compiled, regardless of whether there is a JIT or not. A typical JavaScript system first compiles the JS source code into bytecode. Then it starts executing (interpreting) the bytecode. If there is a JIT, that is a second compiler. It monitors the execution of the bytecode to find hot spots where it compiles the bytecode into machine language.