How to validate date with AngularJS or jQuery?

var isValidDate = function(str) {
    return !!new Date(str).getTime();
}

console.log(isValidDate('31/02/2006'));
console.log(isValidDate('20/20/9999'));

console.log(isValidDate('01/31/2006'));
console.log(isValidDate('01/20/9999'));

var app = angular.module("myApp", []);

function Fiddle($scope) {}

app.directive('input', function() {
  return {
    restrict: 'E',
    require: '?ngModel',
    link: function(scope, elm, attr, ctrl) {
      if (!ctrl) {
        return;
      }


      elm.bind('keyup', function() {

        var matches = /^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(this.value);
        if (matches) {
          var d = matches[1];
          var m = matches[2] - 1;
          var y = matches[3];


          var composedDate = new Date(y, m, d);
          var valid = composedDate.getDate() == d &&
            composedDate.getMonth() == m &&
            composedDate.getFullYear() == y;
        }

        if (!matches || !valid)
          elm.attr('style', 'border:solid 3px #FE2E2E');
        else
          elm.removeAttr('style');
      });
    }
  };
});



function validarData() {
  var valid = isValidDate(document.getElementById("ipData").value);
  document.getElementById("ipData").style.border = (!valid ? 'solid 3px #FE2E2E' : '');
};


function isValidDate(date) {
  var matches = /^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(date);
  if (matches == null) return false;
  var d = matches[2];
  var m = matches[1] - 1;
  var y = matches[3];
  var composedDate = new Date(y, m, d);
  return composedDate.getDate() == d &&
    composedDate.getMonth() == m &&
    composedDate.getFullYear() == y;
}

html,
body {
  height: 100%;
}
body,
form {
  padding: 1em;
}
input,
input.ng-invalid.has-visited.has-focus,
form {
  border: 1px solid #8d8d8d;
}
input,
button {
  border-radius: 3px;
  padding: .25em;
}
body {
  background: #528cc2;
  /* Old browsers */
  background: -moz-linear-gradient(top, #6dbbff 0%, #528cc2 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #6dbbff), color-stop(100%, #528cc2));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, #6dbbff 0%, #528cc2 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, #6dbbff 0%, #528cc2 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, #6dbbff 0%, #528cc2 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, #6dbbff 0%, #528cc2 100%);
  /* W3C */
  filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#6dbbff', endColorstr='#528cc2', GradientType=0);
  /* IE6-9 */
  font-family: sans-serif;
}
ul,
li {
  list-style: none;
}
form {
  background: #f7f7f7;
  /* Old browsers */
  background: -moz-linear-gradient(top, #f7f7f7 0%, #e5e5e5 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #f7f7f7), color-stop(100%, #e5e5e5));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, #f7f7f7 0%, #e5e5e5 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, #f7f7f7 0%, #e5e5e5 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, #f7f7f7 0%, #e5e5e5 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, #f7f7f7 0%, #e5e5e5 100%);
  /* W3C */
  filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#f7f7f7', endColorstr='#e5e5e5', GradientType=0);
  /* IE6-9 */
  border: 1px solid #8d8d8d;
  border-radius: 6px;
  box-shadow: 0 3px 5px rgba(0, 0, 0, .3);
  min-width: 400px;
  margin: auto;
  width: 50%;
}
form li {
  margin-bottom: .5em;
}
label {
  color: #8d8d8d;
  display: block;
  line-height: 1.5;
}
:focus {
  outline: 0;
}
input {
  background: rgba(255, 255, 255, .5);
}
input:focus {
  background: #FFF;
}
input.ng-invalid.has-visited {
  border: 1px solid #E44848;
}
input.ng-valid.has-visited {
  border: 1px solid #a3bf57;
}
.error-message {
  color: #E44848;
}
button {
  background: #528CC2;
  color: white;
  cursor: pointer;
  border: 0;
}
button:disabled {
  background: rgba(82, 140, 194, 0.5);
  color: rgba(255, 255, 255, .5);
  font-weight: 400;
}

<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script><formname="myForm" novalidate ng-app="myApp">
  <ul ng-controller="Fiddle">
    <li>
      <label for="barthirty">Diretiva Angular</label>
      <input input-data type="datetime" ng-model="barthirty" required />

    </li>
  </ul>
  <ul>
    <li>
      <label for="barthirty">Expressao regular</label>
      <input type="datetime" id="ipData" required onkeyup="validarData()"/>
    </li>
  </ul>
  <button type="submit" ng-disabled="myForm.$invalid">Submit</button>
</form>

if(validateDate("10/01/1985"))
    console.log("OK");
else
    console.log("ERRO");

function validateDate(data) {
        // Ex: 10/01/1985
        var regex = "\d{2}/\d{2}/\d{4}";
        var dtArray = data.split("/");

        if (dtArray == null)
            return false;

        // Checks for dd/mm/yyyy format.
        var dtDay= dtArray[0];
        var dtMonth = dtArray[1];
        var dtYear = dtArray[2];

        if (dtMonth < 1 || dtMonth > 12)
            return false;
        else if (dtDay < 1 || dtDay> 31)
            return false;
        else if ((dtMonth==4 || dtMonth==6 || dtMonth==9 || dtMonth==11) && dtDay ==31)
            return false;
        else if (dtMonth == 2)
        {
            var isleap = (dtYear % 4 == 0 && (dtYear % 100 != 0 || dtYear % 400 == 0));
            if (dtDay> 29 || (dtDay ==29 && !isleap))
                return false;
        }
        return true;
    }