JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="MyApp" ng-controller="MyCtrl">
    
    
    
</div>

JavaScript

var MyApp = angular.module("MyApp", []);

function MyCtrl($scope) {
    
    // Init scope vars
    $scope.data_copy = {};
    
    // If data_copy changes...
    $scope.$watch("data_copy", function(newValue, oldValue) {
        
        alert("$watch triggered!");
        
    }, true);
}