unidades:03_servicios:05_constant

<!DOCTYPE html>
<html ng-app="app">

  <head>
    <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.19/angular.min.js"></script>
    <script src="script.js"></script>
  </head>

  <body ng-controller="PruebaController">
    idioma = {{idioma}}
    <br>
    suma de 3 + 6 = {{suma}}
    <br>
    area = {{area}}
  </body>
</html>

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

app.constant("idioma","es-es");



app.constant("matematicas_simples",{
  sumar:function(a,b) {
    return a+b;
  },
  restar:function(a,b) {
    return a-b;
  }
});

app.constant("radio",10);

app.constant("area",function(radio) {
  return 3.1416*radio*radio;
})

app.controller("PruebaController",["$scope","idioma","matematicas_simples","radio","area",function($scope,idioma,matematicas_simples,radio,area) {
  $scope.idioma=idioma;
  $scope.suma=matematicas_simples.sumar(3,6);
  $scope.area=area(radio);
}]);

ejemplo de constant