JSFiddle - React, Tailwind, and code Playground

HTML

<script>
    var app = angular.module('myApp', []);
    app.controller('myCtrl', function($scope) {
        $scope.name=undefined;
        $scope.preview = function(){
            alert("Previewed");
        };
        $scope.update = function(){
            alert("Updated");
        }
    });
</script>

<div ng-app="myApp" ng-controller="myCtrl">

    <form>
        <input type="text" ng-model='name' required>
        <button ng-click='preview()'>Preview</button>
        <button ng-click='update()'>Update</button>
    </form>

</div>