Ajax stands for Asynchronous JavaScript and Xml. Ajax is not a single technology, but a group of technologies. HTML and CSS can be used in combination to mark up and style information. The DOM is accessed with JavaScript to dynamically display, and allow the user to interact with, the information presented. JavaScript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.
Bally Chohan IT Solution is an UK based IT Agency that provides IT services such as Web Development, Web Designing, E-commerce development etc.
Ajax stands for Asynchronous JavaScript and Xml. Ajax is not a single technology, but a group of technologies. HTML and CSS can be used in combination to mark up and style information. The DOM is accessed with JavaScript to dynamically display, and allow the user to interact with, the information presented. JavaScript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.
Bally Chohan IT Solution is an UK based IT Agency that provides IT services such as Web Development, Web Designing, E-commerce development etc.
A three hour tutorial I gave at PHP Quebec on the challenges, theory, and concepts behind making asynchronous JavaScript calls for Web 2.0 Applications using PHP
Ajax stands for Asynchronous JavaScript and Xml. Ajax is not a single technology, but a group of technologies. HTML and CSS can be used in combination to mark up and style information. The DOM is accessed with JavaScript to dynamically display, and allow the user to interact with, the information presented. JavaScript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.
Bally Chohan IT Solution is an UK based IT Agency that provides IT services such as Web Development, Web Designing, E-commerce development etc.
A three hour tutorial I gave at PHP Quebec on the challenges, theory, and concepts behind making asynchronous JavaScript calls for Web 2.0 Applications using PHP
Introduction, Technologies included in ajax,
Ajax Evolution,
Pro’s and Con’s,
Beginners Problem?,
Types and choices of request,
Ajax on hands (Example),
Global Ajax Event Handlers,
Helper Functions,
Low Level interface,
Shorthand Methods for Ajax request.
This presentation introduces AJAX (Asynchronous JavaScript and XML) explaining the details of implementation and constraints in design and also present a sample example for coding a simple ajax powered web page.
Introduction, Technologies included in ajax,
Ajax Evolution,
Pro’s and Con’s,
Beginners Problem?,
Types and choices of request,
Ajax on hands (Example),
Global Ajax Event Handlers,
Helper Functions,
Low Level interface,
Shorthand Methods for Ajax request.
This presentation introduces AJAX (Asynchronous JavaScript and XML) explaining the details of implementation and constraints in design and also present a sample example for coding a simple ajax powered web page.
AJAX (Asynchronous JavaScript And XML) is a group of related technologies that enable developers to created better and easier to use web applications (often referred to as Web 2.0).
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
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This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
2. Web 2.0
• Definition
– The term has been coined and defined by O'Reilly for
designating the use of technologies that improve the
design of Web site, allows for collaborative work, create a
social networking.
– New tools allow to concentrate on the content that is
managed automatically.
– Web application and Web service become a bigger part of
the industry.
• Examples
• Gmail, LinkedIn, Facebook and Orkut etc.
3. Problems of Conventional Web Application
Interruption of user operation
Users cannot perform any operation while waiting for
a response
Loss of operational context during refresh
Loss of information on the screen
Loss of scrolled position
No instant feedback's to user activities
A user has to wait for the next page
Constrained by HTML
Lack of useful widgets
4. Why Ajax?
• Spontaneous and natural user interaction
– No clicking required; mouse movement is a sufficient event trigger
• "Partial screen update" replaces the "click, wait, and refresh" user
interaction model
– Only user interface elements that contain new information are
updated (fast response)
– The rest of the user interface remains displayed without interruption
(no loss of operational context)
• Data-driven (as opposed to page-driven)
– UI is handled in the client while the server provides data
• Asynchronous communication replaces "synchronous request/response
model.”
– A user can continue to use the application while the client program
requests information from the server in the background
– Separation of displaying from data fetching
5. Defining Ajax
• Standards-based presentation using HTML
and CSS;
• Dynamic display and interaction using the
Document Object Model;
• Data interchange and manipulation using
JSON, XML and XSLT;
• Asynchronous data retrieval using
XMLHttpRequest;
• JavaScript binding everything together.
6. Classic Web Application Model
• Most user actions in the interface trigger an
HTTP request back to a web server.
• The server does some processing — retrieving
data, crunching numbers, talking to various
legacy systems — and then returns an HTML
page to the client.
• Synchronous request response mechanism
7.
8.
9. Ajax Engine
An Ajax application places an intermediary between the user and the
server called Ajax Engine (also known as JavaScript part of a web page).
It seems like adding a layer to the application would make it less
responsive, but the opposite is true.
Instead of loading a webpage, at the start of the session, the browser
loads an Ajax engine — written in JavaScript and usually tucked away in a
hidden frame.
This engine is responsible for both rendering the interface the user sees
and communicating with the server on the user’s behalf.
The Ajax engine allows the user’s interaction with the application to
happen asynchronously — independent of communication with the
server. So the user is never staring at a blank browser window and an
hourglass icon, waiting around for the server to do something.
10. How Ajax works?
Every user action that normally would generate an HTTP request
takes the form of a JavaScript call to the Ajax Engine instead.
Any response to a user action that doesn’t require a trip back to
the server — such as simple data validation, editing data in
memory, and even some navigation — the engine handles on its
own.
If the engine needs something from the server in order to respond
— if it’s submitting data for processing, loading additional
interface code, or retrieving new data — the engine makes those
requests asynchronously, usually using XML, without stalling a
user’s interaction with the application.
11. Underlying technologies
JavaScript
Loosely typed scripting language
JavaScript function is called when an event in a page occurs
Glue for the whole AJAX operation
DOM
API for accessing and manipulating structured documents
Represents the structure of XML and HTML documents
CSS
Allows for a clear separation of the presentation style from the
content and may be changed programmatically by JavaScript
XMLHttpRequest
JavaScript object that performs asynchronous interaction with
the server
13. Steps of Ajax Operation
1. A client event occurs
2. An XMLHttpRequest object is created
3. The XMLHttpRequest object is configured
4. The XMLHttpRequest object makes an async. Request
5. The ValidateServlet returns an XML document
containing the result
6. The XMLHttpRequest object calls the callback()
function and processes the result
7. The HTML DOM is updated
14. Starting from the browser…
Your browser must allow JavaScript, or Ajax won’t
work
Otherwise, there’s nothing special required of the browser
Your browser has some some way of providing data
to the server—usually from an HTML form
JavaScript has to handle events from the form,
create an XMLHttpRequest object, and send it (via
HTTP) to the server
Nothing special is required of the server—every server can
handle HTTP requests
Despite the name, the XMLHttpRequest object does not
require XML
15. The XMLHttpRequest object
JavaScript has to create an XMLHttpRequest object
For historical reasons, there are three ways of doing this
For most browsers, just do
var request = new XMLHttpRequest();
For some versions of Internet Explorer, do
var request = new ActiveXObject("Microsoft.XMLHTTP");
For other versions of Internet Explorer, do
var request = new ActiveXObject("Msxml2.XMLHTTP");
The next slide shows a JavaScript function for choosing
the right way to create an XMLHttpRequest object
16. Getting the XMLHttpRequest object
function getXMLHttpRequest {
var request = false;
try { request = new XMLHttpRequest(); }
catch(err1) {
try { var request = new ActiveXObject("Microsoft.XMLHTTP"); }
catch(err2) {
try { var request = new ActiveXObject("Msxml2.XMLHTTP"); }
catch(err3) {
request = false;
}
}
}
return request;
}
17. Preparing the XMLHttpRequest object
Once you have an XMLHttpRequest object, you
have to prepare it with the open method
request.open(method, URL, asynchronous)
The method is usually 'GET' or 'POST'
The URL is where you are sending the data
▪ If using a 'GET', data is appended to the URL
▪ If using a 'POST', data is added in a later step
If asynchronous is true, the browser does not wait for a
response (this is what you usually want)
request.open(method, URL)
As above, with asynchronous defaulting to true
18. Sending the XMLHttpRequest object
• Once the XMLHttpRequest object has been prepared, you
have to send it
• request.send(null);
– This is the version you use with a GET request
• request.send(content);
– This is the version you use with a POST request
– The content has the same syntax as the suffix to a GET request
– POST requests are used less frequently than GET requests
– Example:
request.send('var1=' + value1 + '&var2=' + value2);
19. Some more methods of
XMLHttpRequest object
• abort()
– Terminates current request
• getAllResponseHeaders()
– Returns headers (labels + values) as a string
• getResponseHeader(“header”)
– Returns value of a given header
• setRequestHeader(“label”,”value”)
– Sets Request Headers before sending
20. XMLHttpRequest Properties
onreadystatechange
Set with an JavaScript event handler that fires at each state change
readyState – current status of request
0 = uninitialized
1 = loading
2 = loaded
3 = interactive (some data has been returned)
4 = complete
status
HTTP Status returned from server: 200 = OK
responseText
String version of data returned from the server
responseXML
XML document of data returned from the server
statusText
Status text returned from server
21. On the server side
The server gets a completely standard HTTP
request
In a servlet, this would go to a doGet or
doPost method
The response is a completely standard HTTP
response
Instead of returning a complete HTML page
as a response, the server returns an arbitrary
text string (possibly XML, possibly something
else)
22. Getting the response
Ajax uses asynchronous calls—you don’t wait for the
response
Instead, you have to handle an event
request.onreadystatechange = someFunction;
▪ This is a function assignment, not a function call
▪ When the function is called, it will be called with no parameters
function someFunction() {
if(request.readyState == 4){
var response = request.responseText;
// Do something with the response
}
}
To be safe, set up the handler before you call the send
function
23. Using response data
When you specify the callback function,
request.onreadystatechange = someFunction;
you can’t specify arguments
Two solutions:
Your function can use the request object as a global
variable
▪ This is a very bad idea if you have multiple simultaneous
requests
You can assign an anonymous function:
request.onreadystatechange = function() { someFunction(request); }
▪ Here the anonymous function calls your someFunction with
the request object as an argument.
24. Displaying the response
• http_request.onreadystatechange =
function() { alertContents(http_request); };
http_request.open('GET', url, true);
http_request.send(null);
• function alertContents(http_request) {
if (http_request.readyState == 4) { /* 4 means got the response */
if (http_request.status == 200) {
alert(http_request.responseText);
} else {
alert('There was a problem with the request.');
}
}
}
25. The readyState property
• The readyState property defines the current state of the
XMLHttpRequest object.
• Here are the possible values for the readyState property:
– readyState=0 after you have created the XMLHttpRequest object,
but before you have called the open() method.
– readyState=1 after you have called the open() method, but before
you have called send().
– readyState=2 after you have called send().
– readyState=3 after the browser has established a communication
with the server, but before the server has completed the response.
– readyState=4 after the request has been completed, and the
response data have been completely received from the server.
• Not all browsers use all states
• Usually you are only interested in state 4
26. Doing it with XML
Here’s an XML file named test.xml:
<?xml version="1.0" ?>
<root> I'm a test. </root>
Then in alertContents() from the previous slide, we need to
replace the line
alert(http_request.responseText);
with:
var xmldoc = http_request.responseXML;
var root_node =
xmldoc.getElementsByTagName('root').item(0);
alert(root_node.firstChild.data);
From: http://developer.mozilla.org/en/docs/AJAX:Getting_Started
27. XML notes
The XML response object supports very
complete XML DOM processing
The response header must include:
Content-Type: application/xml
or IE will throw an “Object expected” JavaScript error
Cache-Control: no-cache
or the response will be cached and the request will
never be resubmitted
For some browsers you may need to do
request.overrideMimeType('text/xml');
In Firefox, this will give an error if the response isn’t
valid XML
28. innerHTML
• innerHTML is a non-W3C DOM property that gets or sets the
text between start and end tags of an HTML element
– When the innerHTML property is set, the given string completely
replaces the existing content of the object
– If the string contains HTML tags, the string is parsed and formatted as
it is placed into the document
• Syntax:
var markup = element.innerHTML;
element.innerHTML = markup;
• Example:
document.getElementById(someId).innerHTML =
response;
29. Use Cases of Ajax
• Real-time form data validation
• Autocompletion
• Load on demand
• Sophisticated UI controls and effects
• Refreshing data and server push
• Partial submit
30. Pros and Cons
Pros
Most viable RIA technology so far
Tremendous industry momentum
Several toolkits and frameworks are emerging
No need to download code & no plug-in required
Cons
Still browser incompatibility
JavaScript is hard to maintain and debug
May break expected behavior of browser’s Back
Button
31. References
• http://www.xul.fr/web-2.0.html
• http://www.adaptivepath.com/ideas/essays/archives/000385.php
• http://www.w3schools.com/ajax/ajax_xmlhttprequest.asp
• http://www.xml.com/pub/a/2005/02/09/xml-http-request.html
• http://developer.mozilla.org/en/docs/AJAX:Getting_Started
• https://developer.mozilla.org/en/XMLHttpRequest
• SAMS Teach Yourself Ajax in 10 Minutes, Phil Ballard, p. 85
• JavaScript & AJAX, 6th
Edition, Tom Negrino and Dori Smith, ch.15
• Ajax Basic by Sang Shin Sang Shin (Java Technology Architect), Sun
Microsystems, Inc. Sun Microsystems, Inc. [sang.shin@sun.com],
www.javapassion.com