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AngularJS

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The slides for the AngularJS presentation I did for the DotNed user group.

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AngularJS

  1. 1. AngularJS Maurice de Beijer
  2. 2.  Maurice de Beijer  The Problem Solver  Microsoft Integration MVP Who am I?  Freelance developer  DevelopMentor instructor  Twitter: @mauricedb  Blog: http://msmvps.com/blogs/TheProblemSolver/  Web: http://www.TheProblemSolver.nl  E-mail: maurice.de.beijer@gmail.com
  3. 3.  What is AngularJS? Objectives  Getting started  Directives  Routing  Services
  4. 4.  AngularJS is an MVC framework for browser based apps  Open source and originally developed at Google  The clean architecture has attracted a large following quickly What is AngularJS?  Version 1.0 was released in June 2012  Currently at 1.2.0-rc-3  The goal is building CRUD style business applications  Not as suitable for games etc  Use declarative programming for UI and imperative programming for the logic  The application is wired together in a declarative way  Supports modern desktop and mobile browsers  Internet Explorer version 8 and above
  5. 5.  Model View Controller architecture  A well known and proven architecture  Declarative two way data binding  Automatically synchronizes values between Model and View  Dynamic templates Key features  Makes it very easy to update the user interface  Dependency injections  Code dependencies are automatically injected where needed  Extends HTML with directives  Lots of powerful standard directives or create your own  Build with testing in mind  Makes it much easier to unit test different parts
  6. 6. Extending HTML
  7. 7. Extending HTML
  8. 8.  Visual Studio 2012  Several ways to get IntelliSense  Visual Studio 2013 Tooling  Understands directives and provides IntelliSense  WebStorm  Including support for Live Edit  Batarang  Chrome plugin  Karma Test Runner
  9. 9.  Automatic bootstrapping Bootstrapping  Add a reference to AngularJS  Add the ngApp attribute  Manual bootstrapping is also possible  Gives you more control  For example when using AMD/RequireJS
  10. 10. Model The MVC of AngularJS Controller View
  11. 11. Model Model  The business data  Exposed to the view through the $scope Controller View
  12. 12. Model  The user interface layer View Controller  Data binds to the model  Calls functions on the controller  Use declarative directives for reusable code View
  13. 13. Model Controller Controller  Glues the view and the model together  Provides additional functionality  Uses additional services for reusable logic View
  14. 14. Model Services View  Services are reusable pieces of business logic Services  Separation results in reuse and testability Controller  Created as singleton objects  Inject by AngularJS using dependency injection  Services are created as part of a module  One module can take a dependency on another module  Modules are groupings of related functionality  Also used to bootstrap the application
  15. 15. Model Controller $scope  The glue between the Model and View  Don’t use as the Model! View
  16. 16.  Many general purpose services provided by AngularJS  $http  Used for XMLHttpRequest handling  $location Standard Services  Provide information about the current URL  $q  A promise/deferred module for asynchronous requests  $routeProvider  Configure routes in an SPA  $log  Logging service  Many more
  17. 17.  AngularJS uses dependency injection to decouple modules Dependency injection  Dependencies are automatically injected by the framework  Based on the parameter name  JavaScript is often minified in production  Need to provide AngularJS with some extra hints
  18. 18.  Directives allow you to enhance HTML with new capabilities  Start using HTML as a domain specific language  AngularJS comes with a long list of standard directives Standard directives          ngApp ngBind ngModel ngRepeat ngClick ngEnable/ngDisable ngHide/ngShow ngView …
  19. 19.  Turn HTML into your Domain Specific Language Custom directives  Use templates to embed complete blocks  Can use either attributes, elements, CSS classes or comments  Directives let you interact with the DOM  The place for jQuery code
  20. 20.  Used to create SPA style application  The page can change without using the server  The ngView is often used to render a template Routing  HTML templates loaded when needed  Can also be pre loaded as script with type="text/ng-template"  The $routeProvider service is used to configure the route  The $location service can be used to navigate  Using an anchor tag is also possible  The $routeParams service can be used to retrieve parameters  Properties named in the route URL template
  21. 21.  The basic service for doing all HTTP requests  The building block for all AJAX requests  Can be used as a function  $http(config) $http service  Provides a number of shortcut methods     $http.post(url, config) $http.get(url, config) $http.put(url, config) $http.delete(url, config)  Uses the promises API as the result  Provided by the $q service
  22. 22.  Creates a service for working with RESTful services  Much easier than using the $http object $resource  Standard functions are already preconfigured  Only the common HTTP PUT is missing  Requires a dependency on ngResource  Located in angular-resource.js
  23. 23.  The $httpBackend is the service that is responsible Unit testing AJAX code  Use the XMLHttpRequest object  There is a second version in the ngMock module  Used for unit testing code that does HTTP requests  Can be configured to fake HTTP requests  Or verify that HTTP calls where made
  24. 24.  AngularJS is a complete framework for client side applications  Based on the standard MVC design pattern Summary  Two way data binding makes it easy to build data entry forms  Dependency injection makes it easy to separate modules  Build with testing in mind
  25. 25. The code  Check http://msmvps.com/blogs/theproblemsolver/

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