JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.angularjs.org/angular-1.0.0rc2.js"></script>
<div ng-app="myApp">
    <div ng-controller="MyCtrl">
        <ul>
            <li ng-repeat="item in items">{{item}}</li>
        </ul>
        <input ng-model="newItem" type="text"></input>
        <button ng-click="add(newItem)">Add</button>
    </div>
</div>

CSS

.ng-invalid { border: 2px solid red; }

JavaScript

angular.module('myApp', []);

function MyCtrl($scope) {
    $scope.items = ["A", "B", "C", "D"];
    $scope.add = function(item) {
        $scope.items.push(item);
    };

}