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by hayley-patton
1163 days ago
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> JavaScript is an interpreted language. While running Javascript an interpreter interprets each line and runs it. The modern browser uses Just In Time (JIT) technology for compilation, which compiles JavaScript into executable bytecode. This in the intro can't be of much use. Sure, it's an introductory book, but this isn't a correct simplification. Is JavaScript run by an interpreter or a compiler now? The quote can't decide; and the final stage of JavaScript JITs tends to be machine code too. I know there's often both (with interpreter for cold code, compiler for hot code); but given the level of the rest of the intro, throwing terms like "interpreted", "just in time", "compilation" and "bytecode" which haven't been defined would only lead to confusion, nor are they too relevant. |
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