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What Is A Function In Javascript - Programming - Nairaland

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What Is A Function In Javascript by xutini: 5:42am On Feb 16, 2023

https://www.youtube.com/watch?v=8OzR6vhTKx0

In computer programming, a function is a reusable block of code that performs a specific task. It is a self-contained unit of code that can be called from other parts of a program, and can be passed input values (called arguments or parameters) and return output values.

Functions are an essential building block in most programming languages, and they provide a way to break down a program into smaller, more manageable pieces of code. Functions can be used to perform a wide range of tasks, from simple calculations to complex operations, and can be used to build up more complex programs from simpler components.

Here's an example of a simple function in JavaScript that takes two parameters and returns their sum:


function addNumbers(a, b) {
return a + b;
}



In this example, addNumbers() is a function that takes two parameters, a and b, and returns their sum using the + operator. The function can be called from other parts of the program, like this:



let result = addNumbers(2, 3);



In this example, the value of result would be 5, which is the sum of 2 and 3 passed in as arguments to the addNumbers() function.

Functions can be used to perform many different kinds of tasks, from simple calculations to complex data processing and manipulation. They provide a way to encapsulate code into reusable units, and make programs easier to understand and maintain.

cool
I have created a video to explain these concepts.

If you want to learn more and see how to code these, click on Youtube shocked https://youtu.be/8OzR6vhTKx0 shocked
cool
cool

Xutini - The fun way to learn to digital skills.

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