Sunday, 2 February 2014
So why am I talking about AngularJS over frameworks/libraries like Backbone, Ember, or Knockout?
For me, the major points of separation in AngularJS’s favor are the following:
1. Good documentation
2. Write less code to do more
3. Backed by Google
4. Good developer community
5. Simple Data-Binding
6. Small footprint
1. Angular JS Framework is developed by Google
Angular is built and maintained by dedicated Google engineers. This one may seem obvious, but it’s important to remember that many (not all) frameworks are made by hobbyists in the open source community. While passion and drive have forged frameworks, like Cappucino and Knockout, Angular is built and maintained by dedicated (and highly talented) Google engineers. This means you not only have a large open community to learn from, but you also have skilled, highly-available engineers tasked to help you get your Angular questions answered.
AngularJS came about to standardize web application structure and provide a future template for how client-side apps should be developed.
Angular JS is being used by a host of applications, ranging from hobby to commercial products. Adoption of AngularJS as a viable framework for client-side development is quickly becoming known to the entire web development community.
Because AngularJS is built by Google, you can be sure that you’re dealing with efficient and reliable code that will scale with your project. If you’re looking for a framework with a solid foundation, Angular is your choice!
2. Angular JS is equipped with a lot of features
If you’re familiar with projects, like QUnit, Mocha or Jasmine, then you’ll have no trouble learning Angular’s unit-testing API.
B) MVVM to the Rescue! Models talk to ViewModel objects (through something called the $scope object), which listen for changes to the Models. These can then be delivered and rendered by the Views, which is the HTML that expresses your code. Views can be routed using the $routeProvider object, so you can deep-link and organize your Views and Controllers, turning them into navigable URLs. AngularJS also provides stateless controllers, which initialize and control the $scope object.
D) Extends HTML. Most websites built today are a giant series of <div> tags with little semantic clarity. You need to create extensive and exhaustive CSS classes to express the intention of each object in the DOM. With Angular, you can operate your HTML like XML, giving you endless possibilities for tags and attributes. Angular accomplishes this, via its HTML compiler and the use of directives to trigger behaviors based on the newly-created syntax you write.
E) Makes HTML your Template. If you’re used to Mustache or Hogan.js, then you can quckly grasp the bracket syntax of Angular’s templating engine, because it’s just HTML. Angular traverses the DOM for these templates, which house the directives mentioned above. The templates are then passed to the AngularJS compiler as DOM elements, which can be extended, executed or reused. This is key, because, now, you have raw DOM components, rather than strings, allowing for direct manipulation and extension of the DOM tree.
F) Enterprise-level Testing. As stated above, AngularJS requires no additional frameworks or plugins, including testing. If you’re familiar with projects, like QUnit, Mocha or Jasmine, then you’ll have no trouble learning Angular’s unit-testing API and Scenario Runner, which guides you through executing your tests in as close to the actual state of your production application as possible.
These are the fundamental principles that guide AngularJS to creating an efficient, performance-driven, and maintainable front-end codebase. As long as you have a source for storing data, AngularJS can do all of the heavy lifting on the client, while providing a rich, fast experience for the end user.
3. You can learn Angular JS easily
Getting started with AngularJS is incredibly easy. With a few attributes added to your HTML, you can have a simple Angular app up in under 5 minutes!
1. Add the ng-app directive to the <html> tag so Angular knows to run on the page:
<html lang="en" ng-app>
2. Add the Angular <script> tag to the end of your <head> tag:
3. Add regular HTML. AngularJS directives are accessed through HTML attributes, while expressions are evaluated with double-bracket notation:
<li ng-repeat="activity in activities">
I have enjoyed developing with AngularJS. I hope this post has, at the very least, convinced you to spend a couple of hours playing with AngularJS.
To start, spend some time going through the AngularJS tutorial. Then create your own Custom AngularJS Plunker and see how quickly client-side development can be. As I said at the beginning, AngularJS has a really good community and very clean documentation, which goes into much more detail than this post. Thanks to the AngularJS team for developing this framework.