I do not know in depth. But using the Asynchronous Javascript and XML HTTP Request one can easily access the concept of AJAX. simply ajax is an technique of many technologies such as Javascript, XMLhttprequest, css and dom. Take the new registration of E- mail id when you are a new user. You can suggest an user name by this technique.
AJAX is shorthand for Asynchronous JavaScript and XML (Extensible markup language). Ajax allows continued interaction with the server while not requiring a page to be manually refreshed to display new data.
Extensive MarkUp languageXML parsing is when you convert an XML document into an XML DOM object - which can then be manipulated with a JavaScript.
To manipulate an XML document in javascript, you need an XML parser. Today all browsers come with in-built parsers that can parse the XML document. The parser loads the document into your computer's memory. Once the document is loaded, its data can be manipulated using the DOM(Document Object Model). There is significant differences in implementation of Microsoft Browser based XML parser and the Mozilla browsers based XML parser.
It would be harder to describe the similarity between JavaScript and XML. These two languages are for entirely different purposes.
XML is more strict. For HTML, doing <b><i></b></i> wouldn't matter. That would be invalid XML. Also, XML has no set tags. It's for storing and retrieving set data, that can be used with JavaScript code.
AJAX stands for Asynchronous JavaScript and XML.
AJAX is shorthand for Asynchronous JavaScript and XML (Extensible markup language). Ajax allows continued interaction with the server while not requiring a page to be manually refreshed to display new data.
Asynchronous java script and xml
Extensive MarkUp languageXML parsing is when you convert an XML document into an XML DOM object - which can then be manipulated with a JavaScript.
HTTP is a text based protocol for exchanging data over a network, and the preferred protocol for the Internet (a.k.a. World Wide Web) HTTP is synchronous: a client issues a request and waits for the corresponding response before anything else is done. Asynchronous Javascript And XML (AJAX) is a way of using a HTTP request from the web browser to retrieve data using JavaScript, without leaving the current page. This use is said to be asynchronous because the JavaScript is making the HTTP request does not wait for the response, but instead continues any further necessary processing. A handler function is called to deal with the response, as and when it arrives. So the real answer to the question as it stands is: HTTP is not asynchronous.
Any communication between Javascript code and PHP code needs to be instigated by the Javascript. This is because Javascript is a client side script and PHP is server side. The server can't force data to the browser; it can only reply to requests. The technique of using Javascript on the client side to talk to server side scripts is referred to as AJAX (Asynchronous Javascript And XML). There are several libraries available for simplifying it's usage, and many online tutorials.
Javascript. AJAX stands for Asymmetric Javascript And XML
Asynchronous java-script and XML, or its acronym Ajax.
To manipulate an XML document in javascript, you need an XML parser. Today all browsers come with in-built parsers that can parse the XML document. The parser loads the document into your computer's memory. Once the document is loaded, its data can be manipulated using the DOM(Document Object Model). There is significant differences in implementation of Microsoft Browser based XML parser and the Mozilla browsers based XML parser.
It would be harder to describe the similarity between JavaScript and XML. These two languages are for entirely different purposes.
XML is more strict. For HTML, doing <b><i></b></i> wouldn't matter. That would be invalid XML. Also, XML has no set tags. It's for storing and retrieving set data, that can be used with JavaScript code.
The term XML is an acronym that stands for eXtensible Markup Language. XML is a markup language following the current DOM (Document Object Model) put forth by the W3C (World Wide Web Consortium). Similar to HTML (HyperText Markup Language), it uses angle-bracket tags to define data structures, which can be nested. The major difference between XML and HTML is that XML has no predefined tags, meaning that it defines tags as they are used. Because of this, XML is most widely used for data storage, transmission, and formatting in web applications, often in conjunction with a server-side scripting language such as PHP, or in a design methodology called AJAX (Asynchronous Javascript and XML) wherein Javascript code on the client side can request data from the server in the form of an XMLHTTPRequest, so that it can pull new data from the server to update the page, without having to download and re-render the entire document every time a change is made.