您是否建议在JavaScript中的每个语句后使用分号？ [英] Do you recommend using semicolons after every statement in JavaScript?

问题描述

在许多情况下，如果您将它们遗漏，JavaScript解析器将为您插入分号。我的问题是，你把它们遗漏了吗？

In many situations, JavaScript parsers will insert semicolons for you if you leave them out. My question is, do you leave them out?

如果你不熟悉规则，那么 Mozilla网站。以下是关键点：

If you're unfamiliar with the rules, there's a description of semicolon insertion on the Mozilla site. Here's the key point:

如果JavaScript程序表单的第一个到第n个 ^th 标记在语法上有效但是第一个通过n + 1 ^st 标记不是，并且n ^th 标记和n + 1 ^st 之间存在换行符令牌，然后解析器尝试在n ^th 和n + 1 ^st 令牌之间插入虚拟分号后再次解析程序。

If the first through the n^th tokens of a JavaScript program form are grammatically valid but the first through the n+1^st tokens are not and there is a line break between the n^th tokens and the n+1^st tokens, then the parser tries to parse the program again after inserting a virtual semicolon token between the n^th and the n+1^st tokens.

该描述可能不完整，因为它没有解释@ Dreas的例子。任何人都有完整规则的链接，或者看看为什么这个例子得到一个分号？ （我在JScript.NET中尝试过。）

That description may be incomplete, because it doesn't explain @Dreas's example. Anybody have a link to the complete rules, or see why the example gets a semicolon? (I tried it in JScript.NET.)

此stackoverflow问题是相关的，但仅涉及特定场景。

This stackoverflow question is related, but only talks about a specific scenario.

推荐答案

是的，你应该在JavaScript中的每个语句后使用分号。

Yes, you should use semicolons after every statement in JavaScript.

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