Key Knowledge required about Angular JS

  • Created by Google
  • Model-view-controller framework

Views

  • Html based template
  • Templates are extended with angular elements
  • html elements with ng- attributes, these are called angular directives
  • A directive modifies the functionality

{{ Double Curly Braces indicate that data will be replaced with data binding

{ Single Curly Braces replaces a reference with an object

Example Code

```

```

Controllers

  • Connected to each view
  • Js code
  • Bridge between views and data models
  • Concept of scope: shared context of view in DOM and javascript code
  • Definitions of data models that angular binds to interfaces
  • Business logic
Example code

``` .controller(‘ListCtrl’, function($scope){ $scope.items = []; $buyItem = function(){

} }); ```

Custom directives

  • New html elements that create components
  • Exactly what ionic does

Factors or Services

  • Singleton: Class that can only have a single instantiation at a time, only 1 object will ever exist of that class
  • Encapsulate shared functions
  • Closely related to dependency injection - inject services into controllers when required
Example code

.factory('parkData', function (){ var theParkData = []; return { initData: function (theData){ ... some code ... }, getParks: function (){ ...some code... } } });