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  1. JavaScript Functions - W3Schools

    Why Functions? Functions enable better code organization and efficiency. With functions you can reuse code. You can write code that can be used many times. You can use the same code …

  2. 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 …

  3. 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 …

  4. JavaScript Functions

    JavaScript Functions Summary: in this tutorial, you will learn about JavaScript functions and how to use them to structure the code into smaller and more reusable units.

  5. JavaScript Functions: From Basics to Advanced

    Learn what are functions in JavaScript. Explore the basics of functions in JavaScript, including anonymous and arrow functions, and learn how to organize your code using functions.

  6. 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 …

  7. JavaScript Function and Function Expressions (with Examples)

    A function is an independent block of code that performs a specific task. A function expression is a way to store functions in variables. In this tutorial, you will learn about JavaScript functions …

  8. JavaScript Function Definitions - W3Schools

    JavaScript functions are defined with the function keyword. You can use a function declaration or a function expression.

  9. All about Functions and Scopes in JavaScript - GeeksforGeeks

    Jul 23, 2025 · Let's begin the discussion with Javascript Functions. Functions: Function allows us to declare & pack a bunch of code in a block so that we can use (and reuse) a block of code in …

  10. What are JavaScript Functions, their types and How Do They Work?

    In this comprehensive guide, we’ll learn about JavaScript functions, starting from the very basics and progressing to advanced concepts. We’ll explore not just what functions are, but why …