Sometimes, we want to check for any lowercase letters in a string with JavaScript.
In this article, we’ll look at how to check for any lowercase letters in a string with JavaScript.
How to check for any lowercase letters in a string with JavaScript?
To check for any lowercase letters in a string with JavaScript, we use a regex.
For instance, we write
const hasLowerCase = (str) => {
return /[a-z]/.test(str);
};
to call /[a-z]/.test with str to check if str has any lower case letters.
Conclusion
To check for any lowercase letters in a string with JavaScript, we use a regex.
