Answers for "how to switching uppercase to lower cases and lower cases to uppercase with regex javascript"

regex only uppercase letters js

if (value.match(/^[A-Z]*$/)) {
    // matches
} else {
    // doesn't match
}

Posted by: Guest on October-28-2020

regex for lowercase letters js

function hasLowerCase(str) {
    return (/[a-z]/.test(str));
}

Posted by: Guest on July-22-2020

Code answers related to "how to switching uppercase to lower cases and lower cases to uppercase with regex javascript"