JAVASCRIPT

check if a date time string is a valid date in js

const isValidDate = function(date) {
    return (new Date(date) !== "Invalid Date") && !isNaN(new Date(date));
}

js validate date object

function isValidDate(dateObject){
    return new Date(dateObject).toString() !== 'Invalid Date';
}

javascript validate date

var date_regex = /^(0[1-9]|1[0-2])/(0[1-9]|1d|2d|3[01])/(19|20)d{2}$/;
if (!(date_regex.test(testDate))) {
    return false;
}