Sometimes, we want to get the next letter of the alphabet in JavaScript.

In this article, we’ll look at how to get the next letter of the alphabet in JavaScript.

Get the Next Letter of the Alphabet in JavaScript

To get the next letter of the alphabet in JavaScript, we can use the String.fromCharCode static string method and the charCodeAt string instance method.

For instance, we write:

const str = 'a'
const nextLetter = String.fromCharCode(str.charCodeAt(str.length - 1) + 1)
console.log(nextLetter)

to define the str string.

Then we call str.charCodeAt(str.length - 1) to get the character code of the last character of the string.

Next, we add 1 to the returned character code and call String.fromCharCode to return the letter corresponding to that character code.

Finally, we assign the returned value to nextLetter.

Therefore, we should see that nextLetter is 'b' from the console log.

Conclusion

To get the next letter of the alphabet in JavaScript, we can use the String.fromCharCode static string method and the charCodeAt string instance method.