javascript - regular expression to validate date in mm/dd/yyyy format [duplicate]

Answer 1

Try with

function validateDate(testdate) {
    var date_regex = /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2\d|3[01])\/(19|20)\d{2}$/ ;
    return date_regex.test(testdate);
}

But better to use regular expression use Date object from your date string and then validate it.