JavaScriptfunktio

JavaScriptfunktio is a term used in some programming communities to refer to a function implemented in JavaScript. It is not a formal feature of the language or its specification. The term emphasizes the functional aspects of JavaScript functions, such as being first-class values that can be passed, stored, and returned.

JavaScriptfunktio covers various forms of functions, including named functions, function expressions, and arrow functions. In JavaScript, functions are first-class citizens and participate in a wide range of programming patterns, from callbacks to higher-order functions. This enables currying, composition, and modular, reusable code.

Common patterns associated with JavaScriptfunktio include using map, reduce, and filter with callback functions; creating closures to encapsulate private state; and composing small functions into larger behavior. A simple example is function add(a, b) { return a + b; }. Another example uses an arrow function: const square = x => x * x. Higher-order functions allow functions to take other functions as arguments or return them as results, enabling powerful abstractions.

Because JavaScriptfunktio is not a formal term, its use varies by author and context. In official documentation, developers typically refer simply to JavaScript functions, function expressions, or arrow functions. The concept, however, remains central to understanding JavaScript and modern functional programming patterns.

See also: JavaScript, ECMAScript, functional programming, higher-order function, closures.