JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="Imei">
    <div ng-controller="homeController">
        <button ng-click="showAlert()"> Show alert </button>
<div ng-show="alertMsg.show">{{alertMsg.text}}</div>
    </div>
</div>

JavaScript

var imei = angular.module("Imei", []);
imei.controller('homeController', function ($scope, $timeout) {

    $scope.alertMsg = {
        show: false,
        text:"Alert message is ::show"
    };
    $scope.showAlert =function(){
         $scope.alertMsg.show = true;
    $timeout(function(){      
        $scope.alertMsg.show = false;
    }, 2000);
    }
});