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你不知道的 eval
source link: https://juejin.im/post/5bead276e51d452ceb51e027
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前言 eval() 是 JavaScript 中一个非常有用的函数，它可以一段代码字符串动态执行。然而各种编码规范和最佳实践都强烈抵制 eval，几乎将 eval 打入了死牢，大牛 Douglas Crockford 也在《JavaScript 语言精粹》一书
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