examples/try/change_number_in_js.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport"
     content="width=device-width, initial-scale=1, user-scalable=yes">
  <script src="../angular/angular.min.js"></script>
 
  <script>
   angular.module('DemoApp', [])
   .controller('DemoController', ['$scope', '$filter', function($scope, $filter) {
        $scope.price = 1234.56789;
        $scope.price_number = $filter('number')($scope.price);
        $scope.price_number0 = $filter('number')($scope.price, 0);
        $scope.price_number4 = $filter('number')($scope.price, 4);
        $scope.price_number_1 = $filter('number')($scope.price, -1);
        $scope.price_number_2 = $filter('number')($scope.price, -2);
   }]);
  </script>
 
</head>
<body ng-app="DemoApp" ng-controller="DemoController">
<h1>number filter used in JavaScript</h1>

<input ng-model="price">

<table>
<tr><td>price             </td><td>{{price}}          </td></tr>
<tr><td>price | number    </td><td>{{price_number}}   </td></tr>
<tr><td>price | number:0  </td><td>{{price_number0}}   </td></tr>
<tr><td>price | number:4  </td><td>{{price_number4}}   </td></tr>
<tr><td>price | number:-1 </td><td>{{price_number_1}}   </td></tr>
<tr><td>price | number:-2 </td><td>{{price_number_2}}   </td></tr>
</table>

</body>
</html>