这段JS代码用了混淆，有很多![]+，请帮忙还原。

Posted 2023-04-12

var b = document.createElement((![] + [])[!+[] + !![] + !![]] + ([] + )[!+[] + !![] + !![] + !![] + !![]] + ( !! [] + [])[ + !![]] + ([][[]] + [])[!+[] + !![] + !![] + !![] + !![]] + ([] + [][(![] + [])[!+[] + !![] + !![]] + ([] + )[ + !![]] + ( !! [] + [])[ + !![]] + ( !! [] + [])[ + []]][([] + )[!+[] + !![] + !![] + !![] + !![]] + ([] + )[ + !![]] + ([][[]] + [])[ + !![]] + (![] + [])[!+[] + !![] + !![]] + ( !! [] + [])[ + []] + ( !! [] + [])[ + !![]] + ([][[]] + [])[ + []] + ([] + )[!+[] + !![] + !![] + !![] + !![]] + ( !! [] + [])[ + []] + ([] + )[ + !![]] + ( !! [] + [])[ + !![]]](( !! [] + [])[ + !![]] + ([][[]] + [])[!+[] + !![] + !![]] + ( !! [] + [])[ + []] + ([][[]] + [])[ + []] + ( !! [] + [])[ + !![]] + ([][[]] + [])[ + !![]] + ([] + )[!+[] + !![] + !![] + !![] + !![] + !![] + !![]] + (![] + [])[!+[] + !![]] + ([] + )[ + !![]] + ([] + )[!+[] + !![] + !![] + !![] + !![]] + ( + + [])[ + !![]] + ( !! [] + [])[ + []] + ([][[]] + [])[!+[] + !![] + !![] + !![] + !![]] + ([] + )[ + !![]] + ([][[]] + [])[ + !![]])())[!+[] + !![] + !![]] + ( !! [] + [])[ + []]);

此代码纯属装B用，就是js的各种类型间转换，记住js的数据类型（这里用到的）：[Object Object] false true undefined
然后把他们转成string，通过数组下标取值，在字符串拼接就成了!
如：
!![] + []; // true
+[]; //0
组合：
(!![]+[])(+[]); // 就是‘t' 参考技术A // 竟然是这个
var b = document.createElement('script');

// 把document.createElement改成alert之后会弹出script

vue 代码混淆加密压缩

参考技术A 记录一下使用方法。

在vue.config.js下

然后正常打包。

如果有遇到报错清空，大概率是遇到es6语法导致无法压缩。解决方法有很多，最简单的就是更改uglifyjs版本。
npm i uglifyjs-webpack-plugin@1