Javascript最小化为什么将false替换为！1并将true替换为！0 [英] Javascript minification why is false replaced with !1 and true with !0

问题描述

我正在使用Enyo2编写一个应用程序，该应用程序带有一个基于UglifyJS的缩小工具. 我注意到了:

I'm writing an app using Enyo2 which comes with a minification tool based on UglifyJS. I've noticed that:

var t = false

替换为

var t=!1

用！0代替true.我敢肯定有一个很好的解释，我只是找不到.有什么主意吗?

The same way true is replaced with !0. I'm sure there is a good explanation for that, I just can't find it. Any idea?

推荐答案

显然有一个.如果使用1或0转换为true或false，则它会更短一些，但被视为整数.如果添加！在前面并反转它们，它将合并为布尔值并且仍然很短.

There is one apparently. If you use 1 or 0 to translate true or false, it would be shorter but seen as integers. If you add ! in front and reverse them, it will be coalesced into booleans and still be short.

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