How to Reverse a String in JavaScript

Reversing a string in JavaScript is a straightforward task that can significantly enhance the functionality and user experience of your application. This post shows you how to do it.

How to use the split, reverse, and join methods?

A popular and efficient way to reverse a string in JavaScript is by chaining three built-in methods: split, reverse, and join. This approach is not only elegant but also simple to implement. You start by using the split method to break the string into an array of characters. Then, apply the reverse method to reverse the array's elements. Finally, concatenate the reversed elements back into a string with the join method.

Here's the implementation:

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

Example

const originalString = "Basedash";
const reversedString = reverseString(originalString);
console.log(reversedString); // "hsadaseB"

This method stands out for its conciseness and readability, making it an excellent choice for reversing strings in JavaScript. It efficiently handles most string reversal needs. However, for strings containing Unicode characters, such as emojis or characters from non-Latin scripts, this method might not always perform correctly. In these cases, considering more advanced techniques that account for Unicode characters is advisable.