JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="myApp" ng-controller="myCtrl" ng-init="dummy=0">
<ul >
    <li  ng-repeat="val in [1,2,3]">
    <button ng-click="changeDummyVal(val)">{{val}}</button>
    </li>
</ul>
<div>Value : {{dummy}}</div>
</div>

JavaScript

var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    
    $scope.changeDummyVal=function(val){
        $scope.dummy=val;
    }
});