JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="app" ng-controller="example">
    <select ng-model="type" ng-options="k as v for (k,v) in { h1: 'Large', h2: 'Medium', h3: 'Small' }"></select>
    <h1 change-type>Text</h1>

    <div>{{ type }}</div>
</div>

JavaScript

angular.module('app', [])
        .controller('example', function ($scope) {
            $scope.type = 'h2';
        })
        .directive('changeType', function ($compile) {
            return {
                restrict: 'A',
                link: function (scope, element, attributes) {
                    scope.$watch('type', function () {
                        var attrs = element[0].attributes;
                        var newElement = $('<' + scope.type + '>').text(element.text());
                        for (var i = 0; i < attrs.length; i++) {
                            newElement.attr(attrs.item(i).name, attrs.item(i).value);
                        }
                        element.replaceWith(newElement);
                        $compile(element.contents())(scope);
                    });
                }
            };
        });