@prathmeshw1102/dob-validator/main.js

validates string value if it is valid date format

function validateDOB (dob) {
    let dateDob = new Date(dob);
    let today = new Date();
    if (isNaN(dateDob)) {
        return false;
    }
    let year = dateDob.getFullYear();
    if (year < 1900 || dateDob > today) {
        console.log(`Invalid Date. Please enter a valid date between 1/1/1900 and ${today.toLocaleDateString()}`);
        return false;
    } else {
        return true;
    }
}

module.exports = validateDOB;