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Asynchronous JavaScript and XML (Ajax, or AJAX) is a web development technique in which a web app fetches content from the server by making asynchronous HTTP requests, and uses the new content to update the relevant parts of the page without requiring a full page load. This can make the page more responsive, because only the parts that need to be updated are requested.

Definition and Usage The ajax () method is used to perform an AJAX (asynchronous HTTP) request. All jQuery AJAX methods use the ajax () method. This method is mostly used for requests where the other methods cannot be used.

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jQuery provides several methods for AJAX functionality. With the jQuery AJAX methods, you can request text, HTML, XML, or JSON from a remote server using both HTTP Get and HTTP Post - And you can load the external data directly into the selected HTML elements of your web page!

Ajax requests are triggered by JavaScript code; your code sends a request to a URL, and when it receives a response, a callback function can be triggered to handle the response.

AJAX allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page.

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