rx-angular

rx.angular.js - Reactive Extensions Bindings for AngularJS

This library serves as a bridge between the Reactive Extensions for JavaScript (RxJS) and AngularJS.

With this library, you will be able to do such things as easily watch values as they change, as observable sequences such as:

angular.module('example', ['rx'])
  .controller('AppCtrl', function($scope, observeOnScope) {

    // Listen for changes on the name
    observeOnScope($scope, 'name').subscribe(function(change) {
      $scope.observedChange = change;
      $scope.newValue = change.newValue;
      $scope.oldValue = change.oldValue;
    });
  });

And with your HTML markup you can use it like this:

<div class="container" ng-app="example" ng-controller="AppCtrl">
  <h2>Reactive Angular</h2>
  <ul class="list-unstyled">
    <li>observedChange {{observedChange}}</li>
    <li>newValue: {{newValue}</li>
    <li>oldValue: {{oldValue}}</li>
  </ul>  
  
  <input type="text" ng-model="name" />
</div>

Another example is where we can create an Observable sequence from such things ng-click expressions where we can search Wikipedia:

angular.module('example', ['rx'])
  .controller('AppCtrl', function($scope, $http, rx) {

    function searchWikipedia (term) {
      return rx.Observable
        .fromPromise($http({
          url: "http://en.wikipedia.org/w/api.php?&callback=JSON_CALLBACK",
          method: "jsonp",
          params: {
            action: "opensearch",
            search: term,
            format: "json"
          }
        }))
        .map(function(response){ return response.data[1]; });             
    }

    $scope.search = '';
    $scope.results = [];

    /*
      Creates a "click" function which is an observable sequence instead of just a function.
    */
    $scope.$createObservableFunction('click')
      .map(function () { return $scope.search; })
      .flatMapLatest(searchWikipedia)
      .subscribe(function(results) {
        $scope.results = results;
      });
  });

And the HTML markup you can simply just use a ng-click directive much as you have before, but now it is an Observable sequence.

<div class="container" ng-app="example" ng-controller="AppCtrl">

  <input type="text" ng-model="search">
  <button ng-click="click()">Search</button>

  <ul>
    <li ng-repeat="result in results">{{result}}</li>
  </ul>

</div>

This only scratches the surface of what is possible when you combine the two libraries together.

Community Examples

There are a growing number of community samples using RxJS and Angular.js, including:

• ninya.io - Code

Dive In!

You can find the documentation here as well as examples here and plenty of unit tests.

Getting Started

There are a number of ways to get started with RxJS.

Download the Source

$ git clone https://github.com/Reactive-Extensions/rx.angular.js.git
$ cd ./rx.angular.js

Installing with NPM

npm install rx-angular
npm install -g rx-angular

Installing with Bower

bower install angular-rx

Installing with Jam

jam install rx-angular

Installing All of RxJS via NuGet

PM> Install-Package RxJS-Bridges-Angular

Contributing

There are lots of ways to contribute to the project, and we appreciate our contributors.

You can contribute by reviewing and sending feedback on code checkins, suggesting and trying out new features as they are implemented, submit bugs and help us verify fixes as they are checked in, as well as submit code fixes or code contributions of your own. Note that all code submissions will be rigorously reviewed and tested by the Rx Team, and only those that meet an extremely high bar for both quality and design/roadmap appropriateness will be merged into the source.

License

Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.