A backend-less file for plunker

backend.js

angular.module('plunker')

  .config(function($provide) {
    $provide.decorator('$httpBackend', angular.mock.e2e.$httpBackendDecorator);
  })
  .run(function($httpBackend) {
    var things = [
      {
        id: 0,
        title: 'Finish fake backend',
        completed: true
      },
      {
        id: 1,
        title: 'Make some cool stuff',
        completed: false
      },
      {
        id: 2,
        title: 'Brainstorm new projects',
        completed: false
      }
    ];
    
    $httpBackend.whenGET('/api/todos').respond(200, things);
    
    $httpBackend.whenPOST('/api/todos').respond(function(method, url, data, headers) {
      var newItem = JSON.parse(data);
      newItem.id = things.length;
      things.push(newItem);
      
      return [201, newItem];
    });
    
    $httpBackend.whenPUT(/^\/api\/todos\/\d+$/).respond(function(method, url, data, headers) {
      var item = JSON.parse(data);
      for (var i = 0, l = things.length; i < l; i++) {
        if (things[i].id === item.id) {
          things[i] = item;
          break;
        }
      }
      
      return [200, item];
    });
    
    $httpBackend.whenDELETE(/^\/api\/todos\/\d+$/).respond(function(method, url, data, headers) {
      var regex = /^\/api\/todos\/(\d+)/g;
      
      var id = regex.exec(url)[1]; // First match on the second item.
      id = parseInt(id, 10);
      for (var i = 0, l = things.length; i < l; i++) {
        if (things[i].id === id) {
          var index = things.indexOf(things[i]);
          things.splice(index, 1);
          break;
        }
      }
      
      return [204];
    });
    
    $httpBackend.whenGET(/\.html/).passThrough();
  });