Learn Immutable, Ionic and Jasmine

Building native mobile applications has traditionally been a completely foreign work flow than web development. Recently frameworks, such as Ionic and React Native, have been come out to create a similar web development workflow in a native environment. 

Ionic 2 builds on top of Angular to offer a complete framework for building mobile apps using HTML, CSS, and Javascript that target native mobile and the browser. We’ll work with the RandomUser API to create an employee directory that will let us view user details, update that information, and pass the data back and forth with Ionic 2 routing.

Angular is a development platform for creating applications using modern web standards. Angular includes a wealth of essential features such as mobile gestures, animations, filtering, routing, data binding, security, internationalization, and beautiful UI components. It's extremely modular, lightweight, and easy to learn.

angular

Building apps with Ionic 2

Gesture driven lists are a great way to take a simple UI element and make it fun. We'll look at how we can make swipe-able list items to reveal additional functionality, as well as being able to drag and reorder list items.

Use Sliding Gestures to Reorder an Ionic 2 List

In this lesson we will walk through how to break out code into it's own provider using the CLI. Ionic’s CLI provides a generate command that will quickly help create common components, pipes, providers, and much more. To see what kind of generators are available, run `ionic g --list` in your terminal. 

Use the Ionic CLI to Generate Angular 2 Mobile Components

The simplest way to display data in an app is with a simple listview. This list will go over how items work and how to place certain elements in ion-items position slots.

Build your first page component with Ionic 2

Ionic offers a few different layouts, including a side menu-based one. We’ll setup a simple side menu layout from scratch and see how it behaves on different devices. For instance, if you're users are on an Android device, the side menu (and really, the whole app) will look and behave like a native Android app. As the user swipes from the side, the menu will overlay the main content. For iOS, the menu will not move, but the app's main content will instead. 

Create a Native Mobile Side Menu Layout in Ionic 2

Ionic’s NavController offers an extensive API that allows you to manipulate your apps history, create history from nothing, and programmatically navigate back. NavController has an extensive API with many methods and lifecycle hooks that developers can use. Be sure to check out the [documentation](http://ionicframework.com/docs/api/navigation/NavController/)

Use Ionic 2 NavController to Manipulate App History

AngularJS is an open-source JavaScript framework, maintained by Google, that assists with running single-page applications. Its goal is to augment web-based applications with model–view–controller (MVC) capability, in an effort to make both development and testing easier.

angularjs

In this lesson Trevor looks at testing AngularJS controllers with scope inheritance with Jasmine and test spies.

Testing Controllers With Dependencies

A common UI pattern in mobile apps is to be able to “pull” down on a list and fetch more data, or scroll and load more. This kind of pattern is built into Ionic with the ionRefresher component and ionInfiniteScroll component.


[Infinite Scroll](http://ionicframework.com/docs/2.3.0/api/components/infinite-scroll/InfiniteScroll/) and [Refresher](http://ionicframework.com/docs/2.3.0/api/components/refresher/Refresher/) can be heavily customized as well. Both components allow you to change what is shown as the user begins to perform their action. This allows for a much more customized experience!

Lazy Load Data with Ionic 2

Ionic 2 has it’s own navigation system that that makes it straightforward to link components. We’ll look at how to take data from one template and pass it to another using Ionic NavController. 

Instead of thinking in terms of URLs and hrefs, NavController allows devs to think in terms of a component stack. To navigate forward to a new view, a developer pushes a new component on to the navigation stack. To go back, the component is popped from the stack. This push/pop metaphor is borrowed from traditional native development and allows for a more flexible navigation paradigm.  

Navigate Between Mobile Screens  with the Ionic 2 NavController

Ionic’s CSS and JS can detect what platform a user is on, and adjust to make sure you’re getting the correct interface. To preview this locally, you can use the CLI’s `--lab` flag to see what your app will look like before it’s even deployed to a device.


Preview an Angular 2 Mobile  App with Ionic Lab

Immutable.js provides many Persistent Immutable data structures including: List, Stack, Map, OrderedMap, Set, OrderedSet and Record.

immutable

There are lots of techniques for accessing data kept in your Lists. In this lesson, we will compare how data stored in collections can be accessed directly in both standard Arrays and ImmutableJS Lists. We will also look at how to find data inside an Immutable List using the `findEntry` and `findIndex` methods.

Get items in an ImmutableJS List

The reduce function in ImmutableJS allows you to transform and create new data from an existing data structure. In this example, we will do some math and calculate a sum based on data in an ImmutableJS Map.

Calculate a sum using reduce in ImmutableJS

Custom Jasmine Matchers are a great way to keep your AngularJS Unit Tests clean and tidy. We want to make expectations **readable** and express the intent of the test. Custom matchers help to accomplish this.

Custom Jasmine 1.3 Matchers

Ionic provides a common API for displaying many overlay components, like Alerts, ActionSheet, Modals, and Popovers. We'll look at a few of the APIs and see how to interact with them. To learn more about these different APIs, be sure the view the documentation on them:

- [ModalController](http://ionicframework.com/docs/2.3.0/api/components/modal/ModalController/)
- [ViewController](http://ionicframework.com/docs/2.3.0/api/navigation/ViewController/)
- [AlertController](http://ionicframework.com/docs/2.3.0/api/components/alert/AlertController/)

Create an Overlay Component with the Ionic 2 Overlay API

Cards have become a common way to handle layout and display information in a easy-to-understand format. Ionic offers utility components that make creating cards straightforward. These components, like `ion-card`, `ion-card-content`, and `ion-card-header` are included in the framework to speed up the development process. There's no JavaScript behind these components, they're really just css driven. 

Create Angular 2 Mobile Card based layouts with Ionic 2

We’ll go over requirements needed to create a project and how to install the ionic CLI for project creation. Once it’s installed, we’ll start a project, specify an app name, and reuse a starter template for our project.


Start an Ionic 2 App with the CLI

A typical app will interact with some sort of remote API at some point. We’ll creating a simple provider class to fetch data from the Random User API and populate our apps UI with this data.

The `IonicModule` in this lesson provides some default Angular modules for convenience. As of Ionic 2.x.x, those modules include Angular's `BrowserModule`, `HttpModule`, `FormsModule`, and `ReactiveFormsModule`


Fetch data from an API using Angular 2 HTTP module 

React is one of the web’s most popular frameworks for building JavaScript applications. 

If you know what you’re doing, React can drastically simplify how you build, use, and maintain code.

Whether you’re a React newbie or you’re ready for advanced techniques, you can level-up with egghead. Explore our in-depth courses, lessons, and community resources to build more powerful applications and crack open your career.

react

An introduction on unit testing a ReactJS component using Webpack and Jasmine. Learn how to use Webpack to package and import dependencies plus take advantage of the babel-loader to write a simple Jasmine spec using the latest ES6 syntax.

Unit testing a React component using Jasmine and Webpack

AngularJS provides helpers for convenient testing of your application. In this lesson you will learn how to test a basic controller with Jasmine and Angular.

Testing a Controller

In this lesson John shows some tricks for speeding up your test suite. He digs into some handy features of WebStorm, including the *ddescriber* plugin, as well as some alternative methods for Jasmine for selectively running your tests.

Speed Testing with WebStorm and Jasmine

The key to being productive with Immutable JS is understanding how to update values that are nested. Using `setIn` you can place a new value directly into an existing or new path. If you need access to the previous value before setting the new one, you can use `updateIn` instead. `updateIn`  accepts the same path lookups as `setIn`, but gives you a callback function instead so that you can use the previous value however you wish and return an updated version.

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