Node.js是否支持let关键字？ [英] Does Node.js support let keyword?

问题描述

在Javascript 1.7中， let 关键字引入了块范围。这可以说是Javascript最需要的功能，我想知道Node.js是否支持它。

In Javascript 1.7 the let keyword introduces block scope. This is arguably the most needed feature of Javascript and I was wondering if Node.js supports it.

部分难以确定这是Node运行Google的V8引擎，来自这样的标准，我不知道这些是如何与Javascript xy版本号对齐的。

Part of my difficult in ascertaining this is Node runs Google's V8 engine, which comes from such and such standard and I don't know how these line up with the Javascript x.y version numbers.

推荐答案

是的，如果您使用 - harmony 标志运行Node，则支持 let 关键字。但是，我不建议在生产软件中使用 let 。 （顺便说一下，在你提出新问题之前，你可以通过搜索找到这个答案）

Yes, the let keyword is supported, provided you run Node with the --harmony flag. However, I wouldn't recommend using let in production software. (by the way, you could have found this answer via search, before you asked a new question)

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