Edit in JSFiddle

<div ng-controller="formController">
    <form action="http://example.com" ng-submit="submit()">
        <input type="submit" value="別ページ(http://example.com)に遷移">
    </form>
    <form ng-submit="submit()">
        <input type="submit" value="メッセージ表示">
        <p>{{message}}</p>
    </form>
</div>

var app = angular.module('app', []);
app.controller('formController', function ($scope) {
    $scope.submit = function () {
        console.log('submit');
        $scope.message = 'submitしました';
    };
});
angular.bootstrap(document, ['app']);