JavaScript for循环中的i ++与++ i [英] i++ vs. ++i in a JavaScript for loop

问题描述

由于JSLint，我几乎总是使用i += 1来递增JavaScript for循环，但是对于快速而肮脏的脚本，我改用i++.
但是，我在其他人的代码中看到很多for循环，它们通过执行++i来使i递增.

Because of JSLint, I almost always use i += 1 to increment a JavaScript for loop, but for quick and dirty scripts, I use i++ instead.
However, I see a lot of for loops in other people's code in which they increment i by doing ++i instead.

据我所知，i++和++i之间的含义没有差异，并且jsPref在性能上没有差异.
因此，我想知道++i的惯例来自何处以及人们为什么倾向于这样做.

As far as I know, there is no difference in meaning between i++ and ++i, and jsPref shows no difference in performance.
As such, I'm wondering where the convention of doing ++i comes from and why people tend to do it.

有人知道为什么在for循环中增加计数器时为什么许多JS编码器倾向于++i而不是i++吗?
谢谢.

Does anyone know why a lot of JS coders tend to prefer ++i over i++ when incrementing the counter in a for loop?
Thanks.

推荐答案

在JS和PHP中没有任何区别，我认为即使在Java中也没有任何区别，但在纯c语言中，当编译器未优化代码时，确实如此，这就是为什么很多人使用++ i的原因，因为他们习惯于c语言.

In JS and PHP it does not make any difference, I think even in Java it does not make any difference but in pure c when compiler is not optimizing code it does, and that is why a lot of people use ++i because they are used to it from c.

如果您想知道prerc和post post增量的历史记录searc C/C ++ pre/post增量，这是JS的答案.或查看有关@Orvev答案的评论.

This is an answer for JS if you want history of pre and post increment searc C/C++ pre/post increment. Or see comments on @Orvev's answer.

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