AngularJS Example:

HTML

<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<div ng-app>
  
  <div ng-controller="timectrl">
      <input ng-model="time" type="time" placeholder="HH:mm" required >
  </div>
</div>

JavaScript

function timectrl($scope, $filter) {
    $scope.time = $scope.time = $filter("date")(new Date(), 'HH:mm');
}