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  2. Async/await - Wikipedia

    en.wikipedia.org/wiki/Async/await

    JavaScript added support for async/await in 2017 as part of ECMAScript 2017 JavaScript edition. Rust added support for async/await with version 1.39.0 in 2019 using the async keyword and the .await postfix operator, both introduced in the 2018 edition of the language.

  3. Ajax (programming) - Wikipedia

    en.wikipedia.org/wiki/Ajax_(programming)

    Ajax (also AJAX / ˈ eɪ dʒ æ k s /; short for "asynchronous JavaScript and XML" [1] [2]) is a set of web development techniques that uses various web technologies on the client-side to create asynchronous web applications.

  4. Callback (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Callback_(computer...

    The function that accepts a callback may be designed to store the callback so that it can be called back after returning which is known as asynchronous, non-blocking or deferred. Programming languages support callbacks in different ways such as function pointers, lambda expressions and blocks.

  5. Node.js - Wikipedia

    en.wikipedia.org/wiki/Nodejs

    To accommodate the single-threaded event loop, Node.js uses the libuv library—which, in turn, uses a fixed-sized thread pool that handles some of the non-blocking asynchronous I/O operations. [7] A thread pool handles the execution of parallel tasks in Node.js.

  6. Futures and promises - Wikipedia

    en.wikipedia.org/wiki/Futures_and_promises

    Several mainstream languages now have language support for futures and promises, most notably popularized by FutureTask in Java 5 (announced 2004) [21] and the async/await constructions in .NET 4.5 (announced 2010, released 2012) [22] [23] largely inspired by the asynchronous workflows of F#, [24] which dates to 2007. [25]

  7. JavaScript - Wikipedia

    en.wikipedia.org/wiki/JavaScript

    A JavaScript engine must be embedded within a runtime system (such as a web browser or a standalone system) to enable scripts to interact with the broader environment. The runtime system includes the necessary APIs for input/output operations, such as networking, storage, and graphics, and provides the ability to import scripts.

  8. XMLHttpRequest - Wikipedia

    en.wikipedia.org/wiki/XMLHttpRequest

    Program flow using asynchronous XHR callbacks can present difficulty with readability and maintenance. ECMAScript 2015 (ES6) added the promise construct to simplify asynchronous logic. Browsers have since implemented the alternative fetch() interface to achieve the same functionality as XHR using promises instead of callbacks.

  9. Lazy loading - Wikipedia

    en.wikipedia.org/wiki/Lazy_loading

    Lazy loading (also known as asynchronous loading) is a technique used in computer programming, especially web design and web development, to defer initialization of an object until it is needed. It can contribute to efficiency in the program's operation if properly and appropriately used.