AngularJS Services by Jim Lavin PDF

By Jim Lavin

Layout, construct, and try companies to create a origin in your AngularJS applications

About This Book

Understand how providers are an essential section of the AngularJS framework and the way leveraging prone can profit your applicationDesign and constitution your AngularJS providers and examine the simplest practices utilized in designing AngularJS servicesEffectively write, try out, and eventually set up your application

Who This booklet Is For

If you're an intermediate JavaScript developer who's seeking to improve your knowing of single-page internet software improvement with a spotlight on AngularJS companies, then this e-book is for you.

What you are going to Learn

Write Jasmine situations to check your AngularJS services
Implement universal performance that may be leveraged by means of the controllers, directives, and different prone on your application
Build companies that create, retrieve, replace, and delete your application's information on exterior servers
Incorporate third-party JavaScript libraries into your AngularJS application
Move company common sense to the buyer part to construct a brand new category of serverless applications
Optimize your AngularJS software for max performance

In Detail

This publication offers you the abilities and top practices had to create AngularJS providers. It starts off with the basics of what companies are and their position in a regular AngularJS program. you are going to stroll during the improvement of a real-world program utilizing providers around the numerous program layers after which circulate directly to create companies that supply cross-cutting matters resembling messaging, logging, and authentication.

Next, the e-book covers prone that offer info entry exhibiting you the way to engage with exterior cloud-based info providers and the way to cache facts at the purchaser to lessen community latency. The publication then indicates you the way to put in writing providers that leverage different cloud-based providers to create mashups and comprise performance on your software with no writing loads of code.

You also will methods to create company common sense items, ideas engines, and finite nation machines, that are used to supply enterprise common sense on your software.

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Download e-book for iPad: AngularJS Services by Jim Lavin

Layout, construct, and try providers to create a origin in your AngularJS applications

About This Book

Understand how providers are an important section of the AngularJS framework and the way leveraging companies can gain your applicationDesign and constitution your AngularJS prone and examine the easiest practices utilized in designing AngularJS servicesEffectively write, try, and at last install your application

Who This ebook Is For

If you're an intermediate JavaScript developer who's trying to increase your knowing of single-page internet software improvement with a spotlight on AngularJS companies, then this booklet is for you.

What you are going to Learn

Write Jasmine eventualities to check your AngularJS services
Implement universal performance that may be leveraged by way of the controllers, directives, and different prone on your application
Build prone that create, retrieve, replace, and delete your application's facts on exterior servers
Incorporate third-party JavaScript libraries into your AngularJS application
Move company common sense to the customer facet to construct a brand new category of serverless applications
Optimize your AngularJS program for optimum performance

In Detail

This booklet provide you with the abilities and top practices had to create AngularJS providers. It begins with the basics of what providers are and their function in a customary AngularJS software. you'll stroll during the improvement of a real-world software utilizing prone around the a variety of software layers after which flow directly to create companies that offer cross-cutting issues akin to messaging, logging, and authentication.

Next, the publication covers providers that offer facts entry displaying you ways to engage with exterior cloud-based info prone and the way to cache information at the customer to minimize community latency. The ebook then exhibits you ways to put in writing companies that leverage different cloud-based prone to create mashups and comprise performance on your software with no writing loads of code.

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Additional resources for AngularJS Services

Example text

Promises are only good for a single call. You can't reset a promise and resolve it a second time. If you have a complex application where there are many consumers of a service that need to know when the service's data is updated, promises won't work. A good example is in the sample application. As you build a recipe and add ingredients to the recipe, a rules engine gets invoked to match the current recipe with beer styles that best match the recipe's style parameters. If you were to have the rules engine return a promise from each call, the other views displayed on the page would not get notified when the rules engine finished and they would have to invoke the rules engine themselves in order to get the same data.

The retrieveUser method of data_service returns a promise that is later resolved once the web request returns from the service. toHaveBeenCalled(); }); }); Although the unit test may seem to be a bit complicated, it is rather straightforward. defer() in our mock service. We need to hold on to a reference to the $q service from AngularJS so that we can call it whenever the retrieveUser method of our mock service is called. defer() so that we can resolve the promise, which in turn will execute the then() clause in our service's code.

The first two are best for static values, configuration values, and models and the rest are best for defining services based on how they are constructed or used. The first method is the constant method, which is best used to define a primitive value or object that will never change and needs to be made available for use by a module's config method. constant('logging_config', { traceLevel: { _LOG_TRACE_: '_LOG_TRACE_', _LOG_DEBUG_: '_LOG_DEBUG_', _LOG_INFO_: '_LOG_INFO_', _LOG_WARN_: '_LOG_WARN_', _LOG_ERROR_: '_LOG_ERROR_', _LOG_FATAL_: '_LOG_FATAL_', } }); The preceding code illustrates how messages can be defined for use by other modules to indicate the trace level of the log message sent to a logging service.

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