AngularJS - introduction & how it works?

Aug 8, 20143 likes1,329 views

Angular Framework: Key Features & Data Binding. Full presentation here: http://slides.com/alexebogdan/angular-introduction

AngularJS - introduction & how it works?

What is Angular?
client-side MVC framework for dynamic web apps;
perfect for building CRUD application: data-binding,
templating, form validation, routing, dependency injection,
reusable components;
designed to be testable: unit-testing, end-to-end testing, mocks.

Why Angular?
1. The best Model-View-Controller Architecture
2. It works hand-in-hand with HTML
3. Power over your application
4. Testing is Easy
5. Team development it's easy

Key features
Declarative HTML approach
2 way data binding
reusable components - directives
MVC / MVVM design pattern
dependency injection
routing
templating
animations
form validation
E2E integration testing / unit testing
I18n & I10n

$How it works? <!DOCTYPE html> <html ng-app="myApp"> <head> <title>Angular app</title> <script src="bower_components/angular/angular.js"> {{name}} angular .module('myApp', []) .controller('MyCtrl', function($scope){ $scope.name = 'World'; }); Plunker Example$

How it works?
Browser loads the page and creates the DOM;
Browser triggers DOMContentLoaded event;
Angular looks into the DOM for the ng-app attribute and if
the attribute it's found Angular will:
load the module associated with the directive;
create the application injector;
compile the DOM into a Live View:
: traverse the DOM and collect all of the
directives - the result is a linking function;
: combine the directive with a scope and
produce a live view.

Data Binding
automatic propagation of data changes;
model it's the single-source-of-truth;
digest cycle;
the view it's updated automatically when
the model is changed;
model is updated automatically when a
value in the View has changed.
no DOM manipulation needed.

$watch, $apply & $digest
Angular uses some main components to implement 2 way data
binding:
$watch;
$apply;
$digest;
dirty-checking;
Implement your own data binding mechanism

$watch
Angular extends the browser events-loop and creates the
angular-context;
Every time something is bound in the html a watcher is inserted
in a watch list;
a watcher consist of:
a watch function that returns the current value of
the property it is watching;
a listener function that will be triggered if a change
happened.
the last value returned by the watch function;

$watch
* Doing this two watchers are registered.
* For 10 people in the list it will be (2 * 10) + 1 watchers registered.
First Name: <input type="text" ng-model="user.firstName" />
Last Name: <input type="text" ng-model="user.lastName" />
<ul>
<li ng-repeat="user in userList">
{{user.firstName}} {{user.lastName}}
</li>
</ul>

$digest loop
Angular knows about browser events-loop;
when the browser receives an event that can be handled by
angular-context the $digest loop will be ﬁred;
the $digest loop is made from two smaller loops:
$evalAsync queue;
$watch list;

$digest loop
The $digest will loop trough the watchers list:
It will check the current value returned by the watch function;
It will compare the current value with the last value;
if the equality test fails, it will:
call the listener function associated with that watcher;
it will set the current value as last value;
it will set the $scope as dirty;
If the $scope is dirty, another $digest loop is triggered.

$apply
Angular calls $apply under the hood when we use framework
directives like: ngClick, ngModel, ngChange etc.
The $apply function executes expressions in angular
context and then calls the $digest;
Where to use $apply?
in most of the cases in directives where you handle events
manually;
when you use 3rd party code that will change the $scope;

$apply
app.directive('click', function() {
return {
scope: {
name: '='
},
link: function(scope, element, attrs) {
element.on('click', function() {
scope.$apply(function() {
scope.name = 'new name';
});
});
}
}
});
Plunker Example

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Networking_Essentials_version_3.0_-_Module_7.pptxelestirmen

Inter-Mirifica-Navigating-Media-in-the-Modern-World.pptxsecretarysocom

On Dec. 4, 1963, the Second Vatican Council solemnly approved its first two documents: the constitution on the Sacred Liturgy, Sacrosanctum Concilium, and the decree Inter Mirifica, regarding the mass media. The latter document is much less known than the former one. Nonetheless, Inter Mirifica offers some crucial principles to guide us in a world where we find ourselves ever more immersed in mass communication: the press, film, television, along with the newer forms of media. During the preparation for Vatican II, the Church keenly realized the importance of this topic, and Pope John XXIII established a special body to work on a text that might articulate the Church’s teaching on the mass media and promote her action in this area. The result of this work was an extensive document, entitled “On the instruments of social communication,” which was presented to the Council on Nov. 23, 1962.

Predicting Site Quality Google Patent US9767157B2 - Behzad Hussain.pdfBehzad Hussain

𝐏𝐚𝐭𝐞𝐧𝐭 𝐈𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧 𝗣𝗮𝘁𝗲𝗻𝘁 𝗡𝗼.: US9767157B2 𝗧𝗶𝘁𝗹𝗲: Predicting Site Quality 𝗔𝘀𝘀𝗶𝗴𝗻𝗲𝗲: Google Inc., Mountain View, CA 𝗜𝗻𝘃𝗲𝗻𝘁𝗼𝗿𝘀: Navneet Panda; Yun Zhou 𝗜𝘀𝘀𝘂𝗲 𝗗𝗮𝘁𝗲: September 19, 2017 𝐀𝐛𝐬𝐭𝐫𝐚𝐜𝐭 This patent describes methods and systems for automatically predicting a quality score for a website (or “site”) that can be used as a ranking signal in search engines: 1. 𝗕𝗮𝘀𝗲𝗹𝗶𝗻𝗲 𝘀𝗶𝘁𝗲 𝗾𝘂𝗮𝗹𝗶𝘁𝘆 𝘀𝗰𝗼𝗿𝗲𝘀 obtained for previously scored sites. 2. 𝗣𝗵𝗿𝗮𝘀𝗲 𝗺𝗼𝗱𝗲𝗹𝘀 that map phrase-specific relative frequency measures to baseline quality scores. 3. 𝗔𝗴𝗴𝗿𝗲𝗴𝗮𝘁𝗲 𝘀𝗰𝗼𝗿𝗶𝗻𝗴 of a new site by applying the phrase model to its phrase frequencies and then predicting its overall site quality score from the aggregate. 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 (𝐅𝐢𝐠. 𝟏) 1. 𝗨𝘀𝗲𝗿 𝗗𝗲𝘃𝗶𝗰𝗲 & 𝗡𝗲𝘁𝘄𝗼𝗿𝗸: Users submit queries via a device (e.g., browser) over a network. 2. 𝗦𝗲𝗮𝗿𝗰𝗵 𝗦𝘆𝘀𝘁𝗲𝗺: Contains an Indexing Engine (builds the index database) and a Ranking Engine (ranks results). 3. 𝗦𝗶𝘁𝗲 𝗦𝗰𝗼𝗿𝗶𝗻𝗴 𝗘𝗻𝗴𝗶𝗻𝗲: Computes site quality scores using the phrase model and provides these scores to the ranking engine as part of the ranking signals. 𝐏𝐡𝐫𝐚𝐬𝐞 𝐌𝐨𝐝𝐞𝐥 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 (𝐅𝐢𝐠. 𝟐) 1. 𝗧𝗼𝗸𝗲𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗻-𝗴𝗿𝗮𝗺 𝗘𝘅𝘁𝗿𝗮𝗰𝘁𝗶𝗼𝗻: For each site in a corpus of previously scored sites, extract n-grams (typically 2- to 5-grams) from page content. 2. 𝗥𝗲𝗹𝗮𝘁𝗶𝘃𝗲 𝗙𝗿𝗲𝗾𝘂𝗲𝗻𝗰𝘆 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗶𝗼𝗻: For each extracted n-gram, compute its relative frequency as the ratio of pages containing that n-gram to total pages on the site. 3. 𝗕𝘂𝗰𝗸𝗲𝘁 𝗣𝗮𝗿𝘁𝗶𝘁𝗶𝗼𝗻𝗶𝗻𝗴: Group sites into 20–100 buckets based on their relative frequency measures for each n-gram, ensuring roughly equal bucket sizes or equal interval ranges. 4. 𝗕𝗮𝘀𝗲𝗹𝗶𝗻𝗲 𝗦𝗰𝗼𝗿𝗲 𝗔𝗴𝗴𝗿𝗲𝗴𝗮𝘁𝗶𝗼𝗻: For each bucket, calculate an average baseline quality score from the known scores of sites in that bucket. 5. 𝗣𝗵𝗿𝗮𝘀𝗲 𝗠𝗼𝗱𝗲𝗹 𝗖𝗼𝗻𝘀𝘁𝗿𝘂𝗰𝘁𝗶𝗼𝗻: Associate each n-gram with its vector of bucket-average quality scores. Optionally exclude “neutral” phrases whose scores are statistically indistinguishable from the global average. 𝐒𝐢𝐭𝐞 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐏𝐫𝐞𝐝𝐢𝐜𝐭𝐢𝐨𝐧 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 (𝐅𝐢𝐠. 𝟑) 1. 𝗥𝗲𝗹𝗮𝘁𝗶𝘃𝗲 𝗙𝗿𝗲𝗾𝘂𝗲𝗻𝗰𝘆 𝗳𝗼𝗿 𝗡𝗲𝘄 𝗦𝗶𝘁𝗲: Extract the same set of n-grams from the new (previously unscored) site and compute their relative frequencies. 2. 𝗕𝘂𝗰𝗸𝗲𝘁 𝗟𝗼𝗼𝗸𝘂𝗽: For each phrase, map its relative frequency to the corresponding bucket’s average score in the phrase model. 3. 𝗔𝗴𝗴𝗿𝗲𝗴𝗮𝘁𝗲 𝗦𝗰𝗼𝗿𝗲 𝗖𝗼𝗺𝗽𝘂𝘁𝗮𝘁𝗶𝗼𝗻: Compute an aggregate score across all phrases’ bucket scores—typically via a weighted or unweighted mean. Weights can reflect phrase frequency, distance from a “neutral” score, or limit the influence of overly frequent phrases.

ARTIFICIAL INTELLIGENCE.pptx2565567765676areebaimtiazpmas

Vigilanti-Cura-Protecting-the-Faith.pptxsecretarysocom

On the 29th of June, 1936, Pius XI addressed a pontifical encyclical entitled "Vigilanti Cura" to all the Catholic bishops in the United States. This encyclical was dedicated to "The Motion Picture" and justified his intervention by "the lamentable progress of the motion picture art and industry in the portrayal of sin and vice". I've appropriated the title of his encyclical for my film, putting it to a completely different use to that originally intended. The 'photogenic quality' of the Latin terminology has, however, been preserved and, as per Adorno: "like a neon light which has just been switched on, the commercial and promotional nature of contemporary culture glows brightly". Vigilanti Cura is an irreverent film; insolent and deliberately confusing; a grab-bag of immorality. The montage combines a range of archival imagery from Humanite magazine with images sourced from the media (the military parade of the 14th of July, the current sorry crop of political celebrities ...) or from the cinema (the automatic writing of a puzzle composed of motifs borrowed from existing films). Vigilanti Cura ... or merely a tacit admission of the downfall of contemporary man, drowning in a sea of political, social and religious fundamentalisms. Where is he to be found? Locked in a vis-a-vis with depression and ego. Psychoanalysis no longer serves as a pretext for the dissolution of sexual and social taboos; it now provokes withdrawal into an auto-reflexive isolation, to the extent that societal problems get frozen in the mirror of Auto-Medusification. The mirror has become our idol - let's destroy it!

Cloud Computing - iCloud by Hamza Anwaar .pptxislamicknowledge5224

Cloud Computing – iCloud Cloud computing is a modern technology that allows users to store and access data over the internet instead of using local storage devices. One of the most popular cloud services is Apple's iCloud, which is specially designed for Apple users. iCloud helps users keep their data safe, accessible, and synchronized across all Apple devices like iPhones, iPads, and MacBooks. It is simple to use, secure, and saves time by automatically backing up important information.

What to Expect When Hiring Shopify Development Services_ A Technical Walkthro...CartCoders

ICP -2 Review – What It Is, and How to Participate and Provide Your FeedbackAPNIC

最新版西班牙加泰罗尼亚国际大学毕业证（UIC毕业证书）原版定制Taqyea

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