Sometimes, we want to check if character is a letter in JavaScript.
In this article, we’ll look at how to check if character is a letter in JavaScript.
How to check if character is a letter in JavaScript?
To check if character is a letter in JavaScript, we can use a regex.
For instance, we write
const isLetter = (str) => {
return str.length === 1 && str.match(/[a-z]/i);
};
to create the isLetter function that checks if the str string’s length is 1 and that str matches the /[a-z]/i regex.
[a-z] is the pattern for letters.
And i specifies that we search for matches in a case-insensitive manner.
Conclusion
To check if character is a letter in JavaScript, we can use a regex.
