AngularJS Example:

HTML

<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<div ng-app>
  <div ng-controller="MyCtrl">  
    <form name="myForm">
      <input type="text" ng-model="todoText" size="30"
             name="myInput" ng-blur="validate(myForm)">
    </form>
  </div>
</div>

JavaScript

function MyCtrl($scope) {
  $scope.validate = function(form) {
    alert('blur!');
  };
}