JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app ng-controller='contr'>
<ul>
    <li ng-repeat="item in arr">{{ item }}</li>
</ul>
<button ng-click="arr.push(Math.floor(Math.random()*100))">add</button>
</div>

JavaScript

function contr($scope){
    $scope.arr = [800, 495, 312];
    $scope.Math = Math;
}