Getting Started With AngularJS

View AngularJS course details at www.edureka.co/angular-js
Getting Started With AngularJS

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 Why should we use AngularJS?
 What is AngularJS?
 Big Brands Using AngularJS
 AngularJS Features
 AngularJS MVC & MVW Architecture
 Basic AngularJS Program
 Directives and Filters
 What is Single Page Application?
 How to Build a Responsive Single Page Application?
What will you learn today?

A Web Page
Web Page
DOM Tree of the HTML document
html
head body
h1title
HTML Markup

What the heck is DOM ?
DOM is a structured representation of a document and it provides a programming interface which allows you to
change the style and content of the web page

Deep Thought …
So it means If I can
manipulate the DOM,
I would be able to
change page
content, but how
would I do that ?

Traditional Way of Manipulating DOM - JavaScript
on clicking Manipulate DOM button
Manipulating DOM (webpage) with JavaScript

Deep Thought …
I remember
jQuery can do
DOM manipulation
pretty easily !

Traditional Way of Manipulating DOM - jQuery
on clicking Manipulate DOM button
Manipulating DOM (webpage) with jQuery

Manipulating DOM - AngularJS
 Traditionally, the view modifies the DOM to present data and manipulates the DOM (or invokes jQuery) to
add behavior
 AngularJS puts all the DOM manipulation code into directives, thus easily separating that code out from
the view and making it available as standalone reusable units
 This helps the UI developer to concentrate fully on the user interface and the application developer to
work separately on DOM manipulations and JQuery calls.
whereas…

Static
DOM
Dynamic
DOM (view)
DOM Content
Loaded Event
ng-app=“application name”
$injector
$compile $rootscope
$compile(dom, $rootscope)
Browser AngularJS
HTML
AngularJS Way

Web App URI request is
made
Angular.js is Downloaded
Bootstrap callback is
registered by AngularJS
HTML page is fully
downloaded and callback is
executed
Angular traverses the DOM tree
to find ng-app directive
Angular locates the element containing
ng-app directive and defines it as the
root of app DOM
Dependency Injection is
created by an Injector
Injector creates the root scope object
($rootScope) that will become the
context for app’s model
Angular compiles the DOM by starting at the ng-
app root, then processes directives and bindings
as it work its way down the tree
Once bootstrapped, Angular waits
for browser events that might
change the model
When an event occurs, Angular
checks for a change to the model
If changes to the model are found,
Angular updates the affected bindings
within the view
AngularJS Way

Can you guess, Who invented AngularJS ?

AngularJS Inventors
AngularJS was originally developed in 2009 by Misko
Hevery and Adam Abrons at Brat Tech LLC, firstly
named as GetAngular
<html> enhanced for web applications

Big Brands Using AngularJS
YouTube application for Sony's PlayStation 3
Go To : www.madewithangular.com

Hence The Growth In Job Trends

www.edureka.co/angular-js
Features of AngularJS

MVC & MVW Way of AngularJS
Model View
Directive Unit TestController
Whatever
HTML
CSS
MVC MVW
Model View
Controller
HTML
CSS
JavaScript
Services
2 way data binding 2 way data binding

Steps to create an AngularJS Application
AngularJS: Your First Program
1. Include
AngularJS

2. Bootstrap the App

3. Create the
Controller

4. Create the
View

AngularJS Directives
 The process of rendering of HTML inside the AngularJS application are controlled by Directives
 Directives guide the HTML compiler to control the DOM elements by attaching specific behavior to the elements
Directive
Directive

www.edureka.co/angular-jsSlide 26
Built in Directives
Name Description
ngJq Use this directive to force the angular.element library. This should be used to force either Jqlite by
leaving ng-jq blank or setting the name of the jQuery variable under window (eg. jQuery)
ngApp Use this directive to auto-bootstrap an AngularJS application. The ngApp directive designates
the root elementof the application and is typically placed near the root element of the page - e.g.
on the <body> or <html> tags
a Modifies the default behavior of the html A tag so that the default action is prevented when the
href attribute is empty
ngDisabled This directive sets the disabled attribute on the element if
the expression inside ngDisabled evaluates to truthy
form Directive that instantiates FormController
ngClass The ngClass directive allows you to dynamically set CSS classes on an HTML element by
databinding an expression that represents all classes to be added
ngController The ngController directive attaches a controller class to the view. This is a key aspect of how
angular supports the principles behind the Model-View-Controller design pattern
For rest of the directives refer https://docs.angularjs.org/api/ng/directive

AngularJS Filters
 It formats the value of an expression for display to the user
 Filters in view templates can be used with the following
syntax
» {{ expression | filter }}
 Filters are generally injected when used with controllers,
services and directives
 With filters data can be organized to meet certain criteria
UpperCase
LowerCase
Currency
{{entity.name() | uppercase}}
{{entity.amount() | currency}}
{{entity.name() | lowercase}}

Filter Types
 Generally used filter types
Name Usage
uppercase Change case of string to uppercase
lowercase Change case of string to lowercase
currency Formats string to currency format
number Formats numerical value
json Json representation
date Formats date
filter Filters array based on criteria
orderBy Orders array based in criteria
limitTo Limits number of objects

Single Page Application
 Single-Page Applications (SPAs) are Web apps that load a single HTML page and dynamically update that
page as the user interacts with the app
 In a Single Page Application or SPA the page never reloads, though parts of the page may refresh. This
reduces the round trips to the server to a minimum
Client Side
Routing
Client Side
Rendering

How To Build Responsive SPA Using
AngularJS ?

Building Highly Responsive Single Page Application
 Usecase : Build a User Management Application
 Prerequisite :
» Text Editor (sublime or notepadd ++)
» Latest browser (Firefox or Chrome)
» Installed NodeJS (server)
» Mongo (To store userinfo)
 Project Specifications :
» Login to the Application
» Create a new user
» View Users List
» Update a existing user
» Delete user
» Signout

Certifications
Get certified in AngularJS by Edureka
Edureka's AngularJS course:
• It covers the fundamental concepts like directives, routes, filters, services and factors which helps to build rich user interface
web applications in AngularJS.
• It helps you boost your web development skills and become a sought after SPA (single page application) developer. You will
learn the highly efficient Angular features like data binding, scope management, form validation, routing, i18n & lot more.
• Get to work on a To-Do List App Project towards the end of the course, which gives you complete insights on the Node.js
framework.
• Online Live Courses: 21 hours
• Assignments: 20 hours
• Project: 20 hours
• Lifetime Access + 24 X 7 Support
Go to www.edureka.co/angular-js

Thank You
Questions/Queries/Feedback
Recording and presentation will be made available to you within 24 hours

Getting Started With AngularJS

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