Download e-book for iPad: AngularJS Succinctly by Frederik Dietz

By Frederik Dietz

Writer Frederik Dietz makes use of AngularJS Succinctly to stipulate universal initiatives and demanding situations for builders utilizing Angular.js. together with his support, newbies and specialists alike will discover a reference that essentially outlines numerous demanding situations, their options, and technical reasons for a way the demanding situations are conquer. even if you're a beginner trying to comprehend Angular.js or a professional looking a reference consultant, AngularJS Succinctly is critical!

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Deferred and Promise Problem You wish to synchronize multiple asynchronous functions and avoid JavaScript callback hell. 59 Solution As an example, we want to call three services in sequence and combine the result of them. join(", "); }); }); }); We call the get function three times to retrieve three JSON documents, each with an array of Strings. join(", "); }); You can find the complete example on GitHub. Discussion The all function combines multiple promises into a single promise and solves our problem quite elegantly.

Error(function(data, status, headers, config) { // log error }); }); You can find the complete example using the angular-seed project on GitHub. 54 Discussion The controller defines a dependency to the $scope and the $http module. json endpoint is carried out with the get method. It returns a $promise object with a success and an error method. posts to make it available in the template. The $http service supports the HTTP verbs get, head, post, put, delete, and jsonp. We are going to look into more examples in the following chapters.

We will look into the $q service, Angular's promise/deferred service, in a later chapter. Consuming RESTful APIs Problem You wish to consume a RESTful data source. Solution Use Angular's high-level $resource service. delete({ id: id }); The complete example code is based on Brian Ford's angular-express-seed and uses the Express framework. You can find the complete example on GitHub. 56 Discussion Following some conventions simplifies our code quite a bit. We define the $resource by passing the URL schema only.

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AngularJS Succinctly by Frederik Dietz


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