Javascript

AngularJS by Brad Green, Shyam Seshadri

By Brad Green, Shyam Seshadri

Develop smaller, lighter internet apps which are easy to create and simple 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 construction net apps.

Guided via engineers who labored on AngularJS at Google, you’ll stroll throughout 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 net app.
* Dive deep into Angular’s construction blocks and find out how they interact
* achieve greatest flexibility by means of keeping apart common sense, information, and presentation tasks with MVC
* gather your complete app within the browser, utilizing client-side templates
* Use AngularJS directives to increase HTML with declarative syntax
* speak with the server and enforce uncomplicated caching with the $http carrier
* Use dependency injection to enhance refactoring, testability, and a number of setting layout
* Get code samples for universal difficulties you face in so much net apps

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Sample text

Length + ' external links' ); Notice that I am now passing the filter() method an anonymous function. This function is called with a context equal to the current element. That means when I use $(this) within the function, I am actually referring to each DOM element in the wrapper set. Within the function, I am checking each element in the wrapper set to see whether the element has a class value (hasClass()) of external. If it does, Boolean true, then keep the element in the set, and if it doesn’t (false), then remove the element from the set.

Of course, this is a contrived example for the purpose of demonstrating traversing methods. , jQuery('li')). The second concept that you need to keep in mind when dealing with the traversing methods is that many of the methods will accept an optional parameter that can be used to filter the selections. Let’s take our chained example again and look at how we could change it so that only the last

  • element was selected. children(':last') //selects the last
  • 22 | Chapter 1: jQuery Basics jQuery provides additional traversing methods that were not shown here.

    ReplaceWith('

  • removed
  • '); The new DOM structure added to the DOM is a string parameter passed into the replaceWith() method. In our example, all the

  • elements, including children elements, are replaced with the new structure,
  • removed
  • . 26 | Chapter 1: jQuery Basics Discussion jQuery provides an inverse to this method called replaceAll() that does the same task with the parameters reversed. remove'); Here we are passing the jQuery function the HTML string and then using the replaceAll() method to select the DOM node and its children that we want to be removed and replaced.

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