19. Ajax

Source: Internet
Author: User
Ajaxajax: (Asynchronous JavaScript and XML) refers to asynchronous JavaScript and XML is not a new programming language, but rather a technique for creating better, faster, and more interactive Web applications. is based on JavaScript, XML, HTML, CSS new usage Ajax: Technology to refresh only local pages (1) JavaScript: Update a local page (2) XML: typically used to request data and response data in the Encapsulation (3) XMLHttpRequest object: Send a request to the server and get the return result (4) CSS: Beautify page style (5) Async: Send a request without waiting for a return Return result, processed by the callback function

19. Ajax

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