JavaScript一元运算符的相关内容

文章 2023-02-09 来自：开发者社区

【JavaScript】5_一元运算符等与自增自减

3、一元±一元的±+正号不会改变数值的符号-负号可以对数值进行符号位取反当我们对非数值类型进行正负运算时，会先将其转换为数值然后再运算<script> let a = -10 a = -a let b = '123' b = +b // b = Number(b) console.log(typeof b, b) ...

文章 2022-04-23 来自：开发者社区

JavaScript 一元正号运算符

一元正号介绍一元正号运算符(+)位于其操作数前面，计算其操作数的数值，如果操作数不是一个数值，会尝试将其转换成一个数值。尽管一元负号也能转换非数值类型，但是一元正号是转换其他对象到数值的最快方法，也是最推荐的做法，因为它不会对数值执行任何多余操作。转换字符串一元正号可以用于转换数值字符串为数字࿰...

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更新时间 2023-04-11 11:20:12

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