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.
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.
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.
Database Normalization
The term Normalization is a process by which we can efficiently organize the data in a database. It associates relationship between individual tables according to policy designed both to care for the data and to create the database more flexible by eliminating redundancy and inconsistent dependency.
In other words, Database normalization is a process by which a presented database is tailored to bring its component tables into compliance with a sequence of progressive standard forms. It is an organized way of ensuring that a database construction is appropriate for general purpose querying and also includes the functions of insertion, deletion and updating.
Edgar Frank Codd was the person who introduced the process of database normalization firstly in his paper called A Relational Model of Data for Large Shared Data Banks. The two main objective of database normalization is eliminating redundant data and ensuring data dependencies make sense and make sure that every non-key column in every table is directly reliant on the key and the whole key.
Redundant data or unnecessary data will take more and more space in the database and later, creates the maintenance problem in the database. If data that exists in more than one place must be changed because it wastes disk space and the data must be changed in exactly the same way in all locations of the table.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Introduction to AI for Nonprofits with Tapp Network
Ajax
1.
2. AJAX: Ajax is a way of developing Web applications that combines: * XHTML and CSS standards based presentation * Interaction with the page through the DOM * Data interchange with XML and XSLT * Asynchronous data retrieval wit XMLHttpRequest * JavaScript to tie it all together
3. What is XMLHttpRequest (XHR)? XMLHttpRequest (XHR) is an API available in web browser scripting languages such as JavaScript. It is used to send HTTP or HTTPS requests directly to a web server and load the server response data directly back into the script.The data might be received from the server as XML textor as plain text
4. ASYNCHRONOUS This is the key. In standard Web applications, the interaction between the customer and the server is synchronous . This means that one has to happen after the other. If a customer clicks a link, the request is sent to the server, which then sends the results back. With Ajax, the JavaScript that is loaded when the page loads handles most of the basic tasks such as data validation and manipulation, as well as display rendering the Ajax engine handles without a trip to the server. At the same time that it is making display changes for the customer, it is sending data back and forth to the server. But the data transfer is not dependent upon actions of the customer.
6. Creating XMLHttpRequest Objects: Most of the modern browsers have the XMLHttpRequest support. However, in Internet Explorer browsers till IE7 XMLHttpRequest was offered only using ActiveX object. The later versions of Internet Explorer would support XMLHttpRequest. The following function would create an XMLHttpRequest Object in most of the Browsers function createXMLHttpRequest() { try { return new XMLHttpRequest(); } catch(e) {} try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {} alert("Sorry, the XMLHttpRequest is not supported"); return null; } var xhrObj = createXMLHttpRequest();
7. Request SENDING REQUEST: To send a request to a server, we use the open() and send() methods of the XMLHttpRequest object: xmlhttp.open("GET","ajax_info.txt",true); xmlhttp.send(); GET Requests: xmlhttp.open("GET","demo_get.asp",true); xmlhttp.send(); POST Requests: xmlhttp.open("POST","demo_post.asp",true); xmlhttp.send();
8. Making a request: 1. Get whatever data you need from the Web form. 2. Build the URL to connect to. 3. Open a connection to the server. 4. Set up a function for the server to run when it's done. 5. Send the request.
9. SIMPLE EXAMPLE: Inorder to make a text box ,and getting values thereby sending request to the server ,we need to make a text box and make the javascript with the coding and also calling functions with in the server ,by return sending the values back to the webpage,the javascript is as follows:
10. STEP 1 :TEST <html> <head> <title>AJAX Hello World Test Page</title> <link rel="stylesheet" href="http://www.EXAMPLE.com" type="text/css" title="default" media="screen"> <script type="text/javascript" src="ajax.js"></script> </head> <body> <p> <input id="testmsg" type="text" value="Hello AJAX"> <button onclick="talktoServer()">Say Hello to Server</button> <div id="msg_display" style="{ background: yellow; font-weight: bold; }"> The data from the server will go here ...</div> </body> </html>
11. STEP 2: POST function talktoServer(){ var req = newXMLHttpRequest(); //register the callback handler function var callbackHandler = getReadyStateHandler(req, updateMsgOnBrowser); req.onreadystatechange = callbackHandler; req.open("POST", "servertime.php", true); req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //get the value from the text input element and send it to server var testmsg = document.getElementById("testmsg"); var msg_value = testmsg.value; req.send("msg="+msg_value); }
12. NOTE: If browser is mozilla or safari or opera Then it creates new xmlhttprequest Otherwise it is Internet explorer Then it creates new activexoject Else ,browser does not support xmlhttprequest
13. Step 3: response from server // This is the callback functions that gets called // for the response from the server with the XML data var lastPing = 0; function updateMsgOnBrowser(testXML) { var test = testXML.getElementsByTagName("test")[0]; var message = testXML.getElementsByTagName("message")[0]; var ip = testXML.getElementsByTagName("ip")[0]; var timestamp = test.getAttribute("timestamp"); if (timestamp > lastPing) { astPing = timestamp; var ip_value = ip.firstChild.nodeValue; var message_value = message.firstChild.nodeValue; var msg_display = document.getElementById("msg_display"); msg_display.innerHTML = " Server got the message: amp;quot;" + message_value + "amp;quot;" + "<br>Server IP: "+ ip_value + " Server Timestamp: amp;quot;"+ timestamp + "amp;quot;" ; } }
14. For callback functions //the following two functions are helper infrastructure to //craete a XMLHTTPRequest and register a listner callback function function newXMLHttpRequest() { var xmlreq = false; if (window.XMLHttpRequest) { xmlreq = new XMLHttpRequest(); } else if (window.ActiveXObject) { // Try ActiveX try { xmlreq = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e1) { // first method failed try { xmlreq = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e2) { // both methods failed } }}return xmlreq;}
15. function getReadyStateHandler(req, responseXmlHandler) { return function () { if (req.readyState == 4) { if (req.status == 200) { responseXmlHandler(req.responseXML); } else { var hellomsg = document.getElementById("hellomsg"); hellomsg.innerHTML = "ERROR: "+ req.status; } } } }
16. <? header('Content-Type: application/xml'); $msg = htmlentities(trim(stripslashes($_REQUEST['msg']))); $ts = time(); $ip = gethostbyname("example.com"); print ("<?xml version=amp;quot;1.0amp;quot;?>"); print ("<test timestamp=amp;quot;$tsamp;quot;>"); print ("<ip>$ip</ip>"); print ("<message>$msg</message>"); print ("</test>"); ?> Thus the data request sent from the webpage to server and after certain schematic conditions,the data is back on the [as said asynchronous] it displayed without affecting the process Step 4:Data back to the weboage
17. RESPONSE HANDLING: There are two types of response *response text and response xml *many other forms like json,html etc[ these may come under one of the those two categories]
18. USAGE IN BLOGS: 1.We need to check whether the client can actually handle this or we need to import one [just the same of creating xml request] 2.we can link in the database as we needed ,example lets take calender,it need to be updated from a site and then that particular data need to be used in here. AJAX is combination of two AJAX =DOM +XMLhttprequest
19. DRAWBACKS: 1.AJAX are mainly suitable for thier dynamic pages,so its harder to develop them in static web pages 2.Dynamically created pages will not go on with the brower's page ,so when the user click on the back button,they might not go to the previous page but to a very first page 3.Dynamic webpages will make bookmarking difficult for the uers 4.Many web crawlers will not allow java script,so inorder to prevent it,alternate method must be induced in order to index them using the search engines 5.AJAX powered webpages generate lot of user requests ,taking longer access rate in server to respong the user
