JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content" ng-app="GridSystem">
...
<div id="main-content" class="col-md-9" data-ng-controller="MyGrid">
<h2>Больше текста {{name}}!!!</h2>
<button class="btn btn-success btn-large" data-ng-click="addrow()">
</div>
....
</div>

JavaScript

var GridS = angular.module('GridSystem', []);

GridS.controller('MyGrid', ['$scope', function MyGrid($scope) {
    $scope.name = '';
    $scope.addrow = function() {
        $scope.name = ' ТЕКСТА';
    };
}]);