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XMLHttpRequest (XHR) is an API in the form of a JavaScript object whose methods transmit HTTP requests from a web browser to a web server. [1] The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back. [ 2 ]
The webpage can be modified by JavaScript to dynamically display (and allow the user to interact with) the new information. The built-in XMLHttpRequest object is used to execute Ajax on webpages, allowing websites to load content onto the screen without refreshing the page. Ajax is not a new technology, nor is it a new language.
jQuery, a JavaScript library that provides an Ajax framework and other utilities, and jQuery UI, a plug-in that provides abstractions for low-level interaction and animation, advanced effects and high-level, themeable widgets. GPL and MIT: MooTools, a compact and modular JavaScript framework best known for its visual effects and transitions.
Alt-Svc: http/1.1="http2.example.com:8001"; ma=7200: Permanent Cache-Control: Tells all caching mechanisms from server to client whether they may cache this object. It is measured in seconds: Cache-Control: max-age=3600: Permanent RFC 9111: Connection: Control options for the current connection and list of hop-by-hop response fields. [13]
In the JSONP usage pattern, the URL request pointed to by the src attribute in the <script> element returns JSON data, with JavaScript code (usually a function call) wrapped around it. This "wrapped payload" is then interpreted by the browser. In this way, a function that is already defined in the JavaScript environment can manipulate the JSON ...
Meta refresh is a method of instructing a web browser to automatically refresh the current web page or frame after a given time interval, using an HTML meta element with the http-equiv parameter set to "refresh" and a content parameter giving the time interval in seconds.
While native web standards, including Web Components, modern JavaScript APIs like Fetch and ES Modules, and browser capabilities like Shadow DOM, have advanced significantly, frameworks remain widely used for their ability to enhance developer productivity, offer structured patterns for large-scale applications, simplify handling edge cases ...
For example, it replaces mutation events with mutation observers. Fetch Standard, [32] which "defines requests, responses, and the process that binds them: fetching." The fetch standard defines the 'fetch' JavaScript API, and supersedes the HTML5 fetch functionality, CORS and the HTTP Origin header semantics.