JavaScript Functions - W3Schools
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Functions - JavaScript | MDN
Jul 8, 2025 · A function in JavaScript is similar to a procedure—a set of statements that performs a task or calculates a value, but for a procedure to qualify as a function, it should take some …
Functions in JavaScript - GeeksforGeeks
Sep 13, 2025 · Functions in JavaScript are reusable blocks of code designed to perform specific tasks. They allow you to organize, reuse, and modularize code. It can take inputs, perform …
Functions - web.dev
Mar 31, 2024 · A function is a modular, reusable block of statements used to perform a set of related tasks, such as calculating and returning a value based on arguments provided to the …
Functions - The Modern JavaScript Tutorial
Oct 14, 2022 · The function keyword goes first, then goes the name of the function, then a list of parameters between the parentheses (comma-separated, empty in the example above, we’ll …
JavaScript Functions
To specify a return value for a function, you use the return statement followed by an expression or a value, like this: For example, the following add() function returns the sum of the two arguments:
JavaScript Function Definitions - W3Schools
JavaScript functions are defined with the function keyword. You can use a function declaration or a function expression.
JavaScript Functions: From Basics to Advanced
Typically, a function returns some calculated value using paramters or an expression from a function. For example, the following sum function adds two parameters values using the + …
JavaScript/Functions - Wikibooks, open books for an open world
Feb 13, 2023 · JavaScript supports the software development paradigm functional programming. Functions are a data type derived from Object; they can be bound to variables, passed as …
Functions - JavaScript | MDN
Jul 8, 2025 · Generally speaking, a function is a "subprogram" that can be called by code external (or internal, in the case of recursion) to the function. Like the program itself, a function is …