regular expression validation of Date of Birth of range 1977 to 1999

Question

How to Validate of Date of birth of range 1977 to 1999 in javascript enter code here DOB

function validate() {
  var dob = document.getElementById('txtDOB').value;

  var pattern = /^()$/;

  if (dob == null || dob == "" || !pattern.test(dob)) {

    alert('Invalid date of birth');
    return false;
  } else {
    alert('valid');
    return true;
  }
}

<input type="text" id="txtDOB" />
<input type="button" value="Submit" onclick="validate()" />

You can use [this](http://stackoverflow.com/a/23405144/427146) just change the year range over there! Also note that it is mm/dd/yyyy — sabithpocker, Nov 23 '16 at 09:06
If there's a fixed format of DOB like YYYY/MM/DD, split string by '/' and then check if year falls in given range. — Aakash Martand, Nov 23 '16 at 09:07
Date validation is not direct in JS, there can be invalid dates like Feb-30 that regex can accept. This also works with `Date` constructor which returns march 1. So to validate date correctly custom function is recommended. — sabithpocker, Nov 23 '16 at 09:09
please help my friend. i want to check a year between 1977 to 1999 — user3632667, Nov 23 '16 at 09:14

score 0 · Answer 1 · edited Jun 20 '20 at 09:12

CHECK YEAR + VALID DATE

function validate() {
  var date = new Date(document.getElementById('txtDOB').value), date = date ? date.getFullYear() : false;

  if (date && date >= 1977 && date <= 1999) {
    alert('valid');
    return true;
  } else {
    alert('Invalid date of birth');
    return false;
  }
}

<input type="text" id="txtDOB" />
<input type="button" value="Submit" onclick="validate()" />

JUST CHECK YEAR (no check date valid):

function validate() {
  var date = document.getElementById('txtDOB').value, date = date.match(/\d{4}/);

  if (date && date[0] >= 1977 && date[0] <= 1999) {
    alert('valid');
    return true;
  } else {
    alert('Invalid date of birth');
    return false;
  }
}

<input type="text" id="txtDOB" />
<input type="button" value="Submit" onclick="validate()" />

ONLY FOR YOUR FORMAT (dd-mm-yyyy):

function validate()
{
  var
    date      = document.getElementById('txtDOB').value,
    year      = date.match(/\d{4}/),
    extract   = date.replace(year,'').match(/(\d+)/g)
  ;

  if(date && year && year[0] >= 1977 && year[0] <= 1999 && new Date(extract[1]+'/'+extract[0]+'/'+year[0]) != 'Invalid Date')
  {
    alert('valid');
    return true;
  }
  else
  {
    alert('Invalid date of birth');
    return false;
  }
}

<input type="text" id="txtDOB" />
<input type="button" value="Submit" onclick="validate()" />

when i enter 13-13-1995, the alert message was valid, it is not correct — user3632667, Nov 23 '16 at 09:28

regular expression validation of Date of Birth of range 1977 to 1999

1 Answers1

CHECK YEAR + VALID DATE

JUST CHECK YEAR (no check date valid):

ONLY FOR YOUR FORMAT (dd-mm-yyyy):