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  2. Futures and promises - Wikipedia

    en.wikipedia.org/wiki/Futures_and_promises

    In computer science, futures, promises, delays, and deferreds are constructs used for synchronizing program execution in some concurrent programming languages.Each is an object that acts as a proxy for a result that is initially unknown, usually because the computation of its value is not yet complete.

  3. Async/await - Wikipedia

    en.wikipedia.org/wiki/Async/await

    A function using async/await can use as many await expressions as it wants, and each will be handled in the same way (though a promise will only be returned to the caller for the first await, while every other await will utilize internal callbacks). A function can also hold a promise object directly and do other processing first (including ...

  4. 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 ...

  5. Promise problem - Wikipedia

    en.wikipedia.org/wiki/Promise_problem

    The promise is the set of directed acyclic graphs. In this example, the promise is easy to check. In particular, it is very easy to check if a given graph is cyclic. However, the promised property could be difficult to evaluate. For instance, consider the problem "Given a Hamiltonian graph, determine if the graph has a cycle of size 4."

  6. 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 ...

  7. JavaScript engine - Wikipedia

    en.wikipedia.org/wiki/JavaScript_engine

    A JavaScript engine is a software component that executes JavaScript code. The first JavaScript engines were mere interpreters, but all relevant modern engines use just-in-time compilation for improved performance. [1] JavaScript engines are typically developed by web browser vendors, and every major browser has one

  8. Promise - Wikipedia

    en.wikipedia.org/wiki/Promise

    A promise is a commitment by someone to do or not do something. As a noun promise means a declaration assuring that one will or will not do something. As a verb it means to commit oneself by a promise to do or give. [1] It can also mean a capacity for good, similar to a value that is to be realized in the near future. [2]

  9. No Promises (Cheat Codes song) - Wikipedia

    en.wikipedia.org/wiki/No_Promises_(Cheat_Codes_song)

    "No Promises" is a song recorded by American DJ group Cheat Codes. It features vocals by American singer and songwriter Demi Lovato as well as Trevor Dahl, a member of the group. The song was released on March 31, 2017, and debuted on mainstream radio in the United States on April 11, 2017. [ 1 ] "