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  2. Futures and promises - Wikipedia

    en.wikipedia.org/wiki/Futures_and_promises

    In other cases a future and a promise are created together and associated with each other: the future is the value, the promise is the function that sets the value – essentially the return value (future) of an asynchronous function (promise). Setting the value of a future is also called resolving, fulfilling, or binding it.

  3. Async/await - Wikipedia

    en.wikipedia.org/wiki/Async/await

    First, the async keyword indicates to C# that the method is asynchronous, meaning that it may use an arbitrary number of await expressions and will bind the result to a promise. [1]: 165–168 The return type, Task<T>, is C#'s analogue to the concept of a promise, and here is indicated to have a result value of type int.

  4. ECMAScript version history - Wikipedia

    en.wikipedia.org/wiki/ECMAScript_version_history

    Promise.withResolvers provides a simple way to get a promise's resolve and reject functions directly without having to assign them in the constructor. [ 39 ] // ES 2023 let resolve ; let reject ; let promise = new Promise (( res , rej ) => { resolve = res ; reject = rej ; }); // ES 2024 const { resolve , reject , promise } = Promise ...

  5. 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.

  6. ECMAScript - Wikipedia

    en.wikipedia.org/wiki/ECMAScript

    ECMAScript (/ ˈ ɛ k m ə s k r ɪ p t /; ES) [1] is a standard for scripting languages, including JavaScript, JScript, and ActionScript. It is best known as a JavaScript standard intended to ensure the interoperability of web pages across different web browsers. [2] It is standardized by Ecma International in the document ECMA-262.

  7. List of ECMAScript engines - Wikipedia

    en.wikipedia.org/wiki/List_of_ECMAScript_engines

    Jint: Javascript interpreter with integrated engine for .NET; Narcissus: JavaScript implemented in JavaScript (a meta-circular evaluator), intended to run in another JavaScript engine, of theoretical and educational nature only. JS-Interpreter A lightweight JavaScript interpreter implemented in JavaScript with step-by-step execution.

  8. JavaScript - Wikipedia

    en.wikipedia.org/wiki/JavaScript

    This is an accepted version of this page This is the latest accepted revision, reviewed on 23 February 2025. High-level programming language Not to be confused with Java (programming language), Javanese script, or ECMAScript. JavaScript Screenshot of JavaScript source code Paradigm Multi-paradigm: event-driven, functional, imperative, procedural, object-oriented Designed by Brendan Eich of ...

  9. JavaScript syntax - Wikipedia

    en.wikipedia.org/wiki/JavaScript_syntax

    var x1 = 0; // A global variable, because it is not in any function let x2 = 0; // Also global, this time because it is not in any block function f {var z = 'foxes', r = 'birds'; // 2 local variables m = 'fish'; // global, because it wasn't declared anywhere before function child {var r = 'monkeys'; // This variable is local and does not affect the "birds" r of the parent function. z ...