The Lab: Front-End Frameworks: AngularJS
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The Lab: Front-End Frameworks: AngularJS

This repository contains the sample code for the Front-End Frameworks: AngularJS episodes (Part I, Part II, Part III) of James Shore's screencast. Let's Code: Test-Driven JavaScript is a screencast series focused on rigorous, professional JavaScript development.

These episodes are an exploration and review of the AngularJS framework for building web applications. This repository contains an example application written in AngularJS. It demonstrates several concepts:

  1. Sample application. The sample application code can be found in src/client. The main page template is in index.html. Its controller is in example.js. The AngularJS UI code consists of several directives, which may be found in src/client/ui.

The application also includes a domain layer, value objects, and a (simulated) persistence layer. Those layers are in subdirectories of src/client. This architecture was an experiment to see how well AngularJS handled an approach outside of its comfort zone. It didn't work well, and I don't recommend following this pattern in your own application.

See the screencasts for more information about the sample app.

  1. Unit Tests. All the code is unit tested. You can find tests of an AngularJS controller in src/client/_example_test.js and tests of directives in src/client/ui/_*_test.js. Pay particular attention to the setup code; it's tricky to get right and the test setup fails silently if it's wrong. Also see build/config/karma.conf.js for how the Karma test runner is configured. In particular, the angular-mocks file must be included, or the test setup silently fails.

  2. Modularity. We use CommonJS require() statements for modularity, and we use Browserify to make it work. AngularJS isn’t designed to work with CommonJS, so see src/client/example.js to see how files are included, and e.g., src/client/ui/configuration_panel.js to see how modules are exported.

Other than the AngularJS integration, there's nothing unusual about the CommonJS infrastructure. See the "browserify" target in Jakefile.js and build/util/browserify_runner.js for the automated build. (You can use browserify_runner.js in your own build scripts.) See build/config/karma.conf.js for the karma-commonjs configuration needed to make tests work.

For further details about how this code works, watch the screencasts.

Setup

To try this code on your own computer:

  1. Install Node.js.
  2. Download and unzip the source code into a convenient directory.
  3. All commands must run from the root of the source tree: cd <directory>.

Running the Sample Application

  1. Run ./jake.sh run (Unix/Mac) or jake run (Windows)
  2. Open http://localhost:8080 in a browser.

Running the Tests

  1. Run ./jake.sh karma (Unix/Mac) or jake karma (Windows) to start the Karma server.
  2. Start the browsers you want to test and point each one at http://localhost:9876.
  3. Run ./jake.sh loose=true (Unix/Mac) or jake loose=true (Windows) every time you want to build and test.

License

MIT License. See LICENSE.TXT.