02. Modern Times of #(HashTag) v2 ascii

function solution(inputString) {

    let words = inputString.split(' ');

    let wordsWithHashtag = words.filter((word) => word.startsWith('#') && word.length > 1);

    let validWord = wordsWithHashtag
        .filter((word) => {
            let characters = word.split('').slice(1);
            return (characters.every((char) => isLower(char) || isUpper(char)));
        })
        .map((word) => word.substring(1));

    console.log(validWord.join('\n'))


    function isLower(char) {
        let asciiValue = char.charCodeAt(0);
        return asciiValue >= 97 && asciiValue <= 122;
    }

    function isUpper(char) {
        let asciiValue = char.charCodeAt(0);
        return asciiValue >= 65 && asciiValue <= 90;
    }
}