Live Demo : Trending Angular JS Featues

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Live Demo : AngularJS Trending Features

www.edureka.co/angular-jsSlide 2
Objectives
At the end of this module, you will be able to understand:
Controllers
Two Way Data Binding
Custom Directives and Filters
Unit Testing in AngularJS
AngularJS with Node.js

Controllers in AngularJS define the workflow presentation logic
A JavaScript object
Created by a standard JavaScript object constructor
Attached to the view with ng-controller
Controllers can be defined in the application as shown
<div ng-controller=“MyController">
<body ng-controller=“MyController">
Controllers
Defining Controller
Using Controller in application
var myApp = angular.module('myApp',[]);
myApp.controller(‘MyController'.......

Injected as an argument to the controller function
Holds the model data required by the view
Binds data to the view using AngularJS two way data binding
Represented by $scope in the controller function and links the controller to the view
Figure shown is representation of scope
app.controller(‘MyController', ['$scope',
function($scope) {
…………………..
]};
}]);
Scopes

MODEL
AngularJS is a model driven application
A Model encapsulates the application data
Any change in the state, provides appropriate notifications to the controller and views
On notification views updates the output display of the application
Updating of view happens automatically with data bindings
TEMPLATE
Represents the model in the view and user interactions with application
Model and Template

www.edureka.co/angular-jsSlide 6Slide 6Slide 6
Putting Everything Together
How to bring relation between Model,
Controller and Templates in the
application?

app.controller('ProductsController', ['$scope', function($scope) {
$scope.product = {
id: 1,
name: 'Smart Phones‘,
type: ‘Mobile‘,
stores: [
{ id: 1, name: 'Samsung Galaxy', quantity: 5},
{ id: 2, name: 'Nokia', quantity: 3},
{ id: 3, name: 'HTC', quantity: 6}
]
};
}]);
Controller Scope Injection
Model
Controller Structure

<div ng-controller="ProductController">
Id: <span ng-bind="product.id"></span>
<br/>
Name:<input type="text" ng-model="product.name" />
<br/>
Category: <input type="text" ng-model="product.type" />
</div>
Controller
AngularJS
Binding
Model
Binds form
control to
property
Model
Attribute
Two Way Data Binding

DEMO
Controllers

DEMO
Two Way Data Binding

Why Custom Directives?
If AngularJS comes up with wide rich
variety of directives, why it is
required to create custom directive?

Need of Custom Directives
AngularJS comes with a lot of built-in directives which can successfully manipulate the DOM elements and
perform data binding much more...
But at certain times like converting collection into grid and display in view breaks separation of concerns, so it
is necessary to create directives as an element or attribute etc. This module will focus on the guidelines of
creating the custom directives

Custom Directive Usage
For a module “MyAppModule” a directive with restrict option will be done in the following way
angular.module(MyModule', [])
.directive(‘myDirective', function () {
return {
restrict: 'A',
link: function (scope, elem, attrs) {
}
}
Module Definition
Directive
Definition
Restrict
Option

DEMO
Creating Custom Directive

Why Custom Filters
If AngularJS comes up with wide rich
variety of filters, why it is required to
create custom filters?

Need of Custom Filters
AngularJS comes with a lot of in-built filters which helps to build applications faster and easier. But there are
some scenarios like in case of Angular currency filter, we need the denominations to be displayed differently
than the built-in functionality. In scenarios like these we need to develop custom filters

Custom Filter Structure
 AngularJS comes with elegant way of creating Filters
 Integrating filters to the current application is lot easier by using the below syntax
app.filter(‘filterName', function() {
return function(input, option1, option2) {
var out;
//function code
return out;
});

DEMO
CUSTOM FILTERS

Unit Testing

Manual Testing
Traditionally developers manually test their application
Manual testing is less efficient
Very difficult to track the test result
Very difficult to test all the pieces of code
Very difficult to test the integration of two ore more functions
Differs from one developer to another developer

Unit Testing With Angular.js
Add Test
Watch
Test Fail
Watch
Code
Run Test
Refactor

DEMO
Unit Test

Node.js
Node.js is an open source JavaScript runtime environment to develop server side applications
Node.js runs on V8 JavaScript Engine, V8 is written in C++

Why Node.js ?
Why it is required to run an
application in JavaScript server
environment like Node.js ?

Node.js Architecture

Who uses Node.js?

DEMO
Node.js with Angular

LIVE Online Class
Class Recording in LMS
24/7 Post Class Support
Module Wise Quiz
Project Work
Verifiable Certificate
Course Features

Course Topics
 Module 1
» Introduction to JavaScript MVC Framework
and AngularJS
 Module 2
» Dependency Injection and Controllers
 Module 3
» Route, Directive and Filters
 Module 4
» Creating Custom Directives and Filters
 Module 5
» Third-party AngularJS Modules and Testing
Angular
 Module 6
» AngularJS with Node.js, Yeoman and Rest
Exposure
 Module 7
» Project Discussion

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