Simple Validation Function in Javascript to Check if a String is Valid ROMAN Numeral or Not | Input Validation Using Regex

If you need to validate your input agains roman number then here's a simple javascript validation method to check if the given input is a valid ROMAN numerals or not

Trying out our ROMAN number validator

console.log(isRoman("XXXVIII")) // true
console.log(isRoman("CHIWX")) // false
console.log(isRoman("MMMCMXCIX")) // true