node.js 会编译 JavaScript 吗? [英] Does node.js compile JavaScript?

问题描述

Node.js 使用 V8，它编译 JavaScript 作为优化策略.

Node.js uses V8 and it compiles the JavaScript as an optimization strategy.

那么，服务器端通过 node.js/V8 运行的 JavaScript 是编译还是解释?

So, the JavaScript running at the server side via node.js / V8 is compiled or interpreted?

推荐答案

解释器:语言运行时/虚拟机的(核心)模块部分，它针对一组用其虚拟机的语言表达的表达式采取特定动作"模块是.

Interpreter: A (core) module part of the language runtime / virtual machine which takes specific 'actions' against a set of expressions expressed in the language whose virtual machine the module is.

编译器:语言运行时的(核心)模块部分，它将以模块所在的编译器的语言表达的一组表达式转换"为一组对运行表达式的架构本机的指令.

Compiler: A (core) module part of the language runtime which 'converts' a set of expressions expressed in the language whose compiler the module is, into a set of instructions native to the architecture where the expressions are run against.

标准 Node.js 是针对 V8 构建的，它将每个 Javascript 代码片段编译为原生指令.您可以在命令行中使用 --print_code 标志来查看哪些脚本正在被编译，以及编译成什么.

Standard Node.js is built against V8, which compiles every Javascript code snippet into native instructions. You may use --print_code flag in the command line to see which scripts are getting compiled, and compiled into what.

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