A JavaScript function is a block of code designed to perform a particular task. A JavaScript function is executed when "something" invokes it (calls it).

Jun 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 …

May 14, 2025 · JavaScript functions serve as reusable blocks of code that can be called from anywhere within your application. They eliminate the need to repeat the same code, promoting …

Oct 14, 2022 · A function is an action, so function names are usually verbal. There exist many well-known function prefixes like create…, show…, get…, check… and so on. Use them to …

In this tutorial, you will learn about JavaScript functions and function expressions with the help of examples. Certification courses in Python, Java, SQL, HTML, CSS, JavaScript and DSA. Try …

Jun 30, 2022 · What is a Function in JavaScript? A function is a block of reusable code written to perform a specific task. You can think of a function as a sub-program within the main program. …

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.

Mar 31, 2024 · A function declaration (also called a "function statement" or "function definition") creates a named function that can be invoked elsewhere in its containing scope. Function …

JavaScript Functions. In this tutorial you will learn how to define and call a function in JavaScript. What is Function? A function is a group of statements that perform specific tasks and can be …

Mar 13, 2025 · A function declaration creates a Function object. Each time when a function is called, it returns the value specified by the last executed return statement, or undefined if the …