AngularJS by Brad Green, Shyam Seshadri PDF

Javascript

By Brad Green, Shyam Seshadri

ISBN-10: 1449344852

ISBN-13: 9781449344856

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

Guided via engineers who labored on AngularJS at Google, you’ll stroll in the course of the framework’s key positive aspects, after which construct a operating AngularJS app—from structure to checking out, compiling, and debugging. You’ll learn the way AngularJS is helping decrease the complexity of your internet app.
* Dive deep into Angular’s construction blocks and find out how they interact
* achieve greatest flexibility through keeping apart common sense, info, and presentation obligations 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 atmosphere layout
* Get code samples for universal difficulties you face in such a lot net apps

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As with other aspects of coding style, this choice is completely a matter of preference. Falling Through Another popular source of debate is whether falling through from one case to another is an acceptable practice. Accidentally omitting a break at the end of a case is a very common source of bugs, so Douglas Crockford argues that every case should end with break, return, or throw, without exception. JSLint warns when one case falls through into another. I agree with those who consider falling through to be an acceptable method of programming, as long as it is clearly indicated, such as: switch(condition) { // obvious fall through case "first": case "second": // code break; case "third": // code } /*falls through*/ default: // code This switch statement has two obvious fall-throughs.

This style also now appears in Crockford’s Code Conventions, the jQuery Core Style Guide, the SproutCore Style Guide, the Google JavaScript Style Guide, and the Dojo Style Guide. The second style of brace alignment places the opening brace on the line following the beginning of the block statement, as in this example: if (condition) { doSomething(); } else { doSomethingElse(); } 30 | Chapter 3: Statements and Expressions This style was made popular by C#, as Visual Studio enforces this alignment.

The omission of braces also generates warnings by default in both JSLint and JSHint. An overwhelming majority of JavaScript developers are in agreement that block statements should always use braces and always occupy multiple lines instead of one. This is because of the confusion created when braces aren’t included. Consider the following: if (condition) doSomething(); doSomethingElse(); It’s difficult to tell the author’s intent in this code. There’s clearly an error here, but it’s impossible to know whether the error is an indentation error (the last line should not be indented) or braces are missing because both line 2 and line 3 need to be executed inside the if statement.

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AngularJS by Brad Green, Shyam Seshadri


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