<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="myCtrl"> 

<p>The time is:</p>

<h1>{{theTime}}</h1>

</div>

<p>The $interval service runs a function every specified millisecond.</p>

<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $interval) {
  $scope.theTime = new Date().toLocaleTimeString();
  $interval(function () {
      $scope.theTime = new Date().toLocaleTimeString();
  }, 1000);
});
</script>

</body>
</html>
// Code goes here

/* Styles go here */

<div>
w3s121-AngularJS Service Interval
<br/>
code example:
  <hr>
index.html
  <br/>
  <textarea 
  id='codeoutput' 
  style="width: 100%;height: 300px;background-color: #dffff4;
      font-size: 1em;font-family: Verdana, Arial, Helvetica, sans-serif;
      border: 1px solid black;">
      
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="myCtrl"> 

<p>The time is:</p>

<h1>{{theTime}}</h1>

</div>

<p>The $interval service runs a function every specified millisecond.</p>

<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $interval) {
  $scope.theTime = new Date().toLocaleTimeString();
  $interval(function () {
      $scope.theTime = new Date().toLocaleTimeString();
  }, 1000);
});
</script>

</body>
</html>

    
  </textarea>

  
  <hr/>
  <iframe 
  allowfullscren="allowfullscren" 
  frameborder="0" 
  src="https://embed.plnkr.co/zOAnd9rtSi2IwveQVzU9?show=preview" 
  style="height: 400px; width: 100%;">
  </iframe>
  <hr> 
https://www.w3schools.com/angular/angular_services.asp
  <hr> 
  201603
</div>