Download AngularJS by Brad Green, Shyam Seshadri PDF

By Brad Green, Shyam Seshadri

Develop smaller, lighter net apps which are easy to create and simple to check, expand, and preserve as they develop. This hands-on consultant introduces you to AngularJS, the open resource JavaScript framework that makes use of Model–view–controller (MVC) structure, information binding, client-side templates, and dependency injection to create a much-needed constitution for construction internet apps.

Guided via engineers who labored on AngularJS at Google, you’ll stroll during the framework’s key positive aspects, after which construct a operating AngularJS app—from format to checking out, compiling, and debugging. You’ll find out how AngularJS is helping lessen the complexity of your internet app.
* Dive deep into Angular’s construction blocks and find out how they interact
* achieve greatest flexibility via keeping apart common sense, facts, and presentation duties with MVC
* gather your complete app within the browser, utilizing client-side templates
* Use AngularJS directives to increase HTML with declarative syntax
* converse with the server and enforce basic caching with the $http carrier
* Use dependency injection to enhance refactoring, testability, and a number of surroundings layout
* Get code samples for universal difficulties you face in so much net apps

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Sample text

Writing the server bits is beyond the scope of this book, so let’s just imagine that we’ve created a service that will return a list of products as JSON when you make a query to /products. etc... price | currency}}

42 | Chapter 2: Anatomy of an AngularJS Application

As we learned previously, we would be better off in the long run by delegating the work of talking to the server to a service that could be shared across controllers. We’ll take a look at this structure and the full range of $http functions in Chapter 5.

Watch('items', calculateTotals, true); } Notice here that the $watch specified items as a string. This is possible because the $watch function can take either a function (as we did previously) or a string. If a string is passed to the $watch function, then it will be evaluated as an expression in the scope of the $scope it’s called on. This strategy might work well for your app. However, since we’re watching the items array, Angular will have to make a copy of it to compare it for us. For a large list of items, it may perform better if we just recalculate the bill properties every time Angular eval‐ uates the page.

Not everyone’s browser supports JavaScript. Let everyone see all of your content and use your app without needing to execute code in the browser. 2. Some folks use browsers that work differently. Visually impaired folks who use screen-readers and some mobile phone users can’t use sites with JavaScript. 3. Javascript works differently across different platforms. IE is usually the culprit here. You need to put in different event-handling code depending on the browser. 4. These event handlers reference functions in the global namespace.

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