Password Validator

function solve (password) {

    let isValid = true;

    if (password.length < 6 || password.length > 10) {
        console.log(`Password must be between 6 and 10 characters`);
        isValid = false;
    }

    if (countOfInvalidChars(password) > 0) {
        console.log(`Password must consist only of letters and digits`);
        isValid = false;
    }


    if (countDigits(password) < 2) {
        console.log(`Password must have at least 2 digits`);
        isValid = false;
    }

    if(isValid) {
        console.log(`Password is valid`);
    }


    function countOfInvalidChars(password) {
        let alphanumericArray = [];
        let invalidChars = 0;


        for (let i = 48; i <= 57; i++) {
            alphanumericArray.push(String.fromCharCode(i));
        }

        for (let i = 65; i <= 90; i++) {
            alphanumericArray.push(String.fromCharCode(i));
        }

        for (let i = 97; i <= 122; i++) {
            alphanumericArray.push(String.fromCharCode(i));
        }

        for (let i = 0; i < password.length; i++) {
            let char = password[i];

            if (!alphanumericArray.includes(char)) {
                invalidChars++;
            }
        }

        return invalidChars;
    }





    function countDigits(password) {
        let count = 0;

        for (let i = 0; i < password.length; i++) {
            let char = password[i];
            let code = char.charCodeAt(0);

            if (code >= 48 && code <= 57) {
                count++;
            }
        }

        return count;
    }
}