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String 和 toString 的区别 (2022-6-8) #34

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yaogengzhu opened this issue Jun 8, 2022 · 0 comments

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yaogengzhu commented Jun 8, 2022

String 和 toString 的区别

定义的位置不同

String 是 javascript的全局函数
toString() 是 Object 原型的一个方法

Sting()可以完成对 null 和 undefined 的转换

String() 可以将 null, undefined 转化为字符串；而 toString()不可以。

不同进制之间的转换

String()只支持转为普通字符串，不支持转为相应进制的字符串；

而Number.toString(radix)可以将一个Number对象转换对应进制的字符串；其中radix可选，表示数字几基数。

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