如何在JavaScript中反转字符串？ [英] How do you reverse a string in place in JavaScript?

问题描述

当传递给带有return语句的函数时，如何在JavaScript中反转字符串（或就地）？所有没有使用内置功能？ .reverse（）， .charAt（）等。

How do you reverse a string in place (or in-place) in JavaScript when passed to a function with a return statement? All without using the built-in functions? .reverse(), .charAt(), etc.

推荐答案

只要您处理简单的ASCII字符，并且您很乐意使用内置函数，这将有效：

As long as you're dealing with simple ASCII characters, and you're happy to use built-in functions, this will work:

function reverse(s){
    return s.split("").reverse().join("");
}

如果您需要支持UTF-16或其他多字节字符的解决方案，请注意，此函数将提供无效的unicode字符串或有效的字符串。您可能需要考虑此答案。

If you need a solution that supports UTF-16 or other multi-byte characters, be aware that this function will give invalid unicode strings, or valid strings that look funny. You might want to consider this answer instead.

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