JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html>
<html ng-app>
  <head>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.8/angular.min.js"></script>
  </head>
  <body>
    <div ng-controller="mainCtrl">

        <button id="myBtn">click Me</button>

    </div>
    <script type="text/javascript">
    	(function() {
    "use strict";
		var btn = document.querySelector('#myBtn');
    btn.setAttribute("ng-click", "doSomething()");
    angular.module("myApp", []).controller("mainCtrl", mainCtrl);
		function mainCtrl($scope){
    	$scope.doSomething = function(){
      	alert('abc');
      }
    
    }
    angular.bootstrap(document, ['myApp']); 
    
    
  })();
    </script>
  </body>
</html>