How Can I Reverse a JavaScript String In-Place Without Using Built-in Functions?

In-Place String Reversal in JavaScript without Built-In Functions

Reversing a string in JavaScript is a common task, but how can it be done in-place when it is passed to a function with a return statement, without using any built-in functions?

One approach is to leverage the array expansion operator and split the string into individual characters, reverse the array, and then join it back together. This method is Unicode aware and supports multi-byte characters:

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

Alternatively, if you need to support non-ASCII characters, you can use the split() function with the "u" (Unicode) flag set as the separator:

function reverse(s) {
    return s.split(/(?:)/u).reverse().join("");
}

These examples provide efficient and versatile methods for reversing strings in-place without relying on built-in string manipulation functions.

The above is the detailed content of How Can I Reverse a JavaScript String In-Place Without Using Built-in Functions?. For more information, please follow other related articles on the PHP Chinese website!