What is JavaScript ?

JavaScript is a high-level programming language that is widely used for creating interactive websites and web applications. It was initially created by Brendan Eich at Netscape in 1995, and has since become one of the most popular programming languages in the world.

It is primarily used for client-side web development, which means that it runs in a user’s web browser rather than on a web server. It allows developers to create dynamic and interactive web pages that can respond to user actions in real-time. With JavaScript, developers can create animations, validate user input, manipulate the Document Object Model (DOM), and interact with web APIs.

It is also used for server-side programming, thanks to the introduction of Node.js in 2009. Node.js is a it runtime that allows developers to write server-side applications in it, making it possible to use it on both the client and server sides of web development.

It is a versatile language that can be used for a wide range of projects, from simple scripts to complex web applications. It has a large and active community, with many open source libraries and frameworks available to make development easier and more efficient.

It function that takes two numbers as input and returns their sum:

function addNumbers(num1, num2) {
  return num1 + num2;
}

// Example usage:
let result = addNumbers(3, 5);
console.log(result); // Output: 8

This code defines a function called addNumbers that takes two parameters, num1 and num2. The function body uses the return keyword to specify that the sum of num1 and num2 should be returned.

The example usage then calls the addNumbers function with arguments 3 and 5, which will return 8. The console.log() statement then outputs the result to the console.

Note that this is just a simple example and there are many other ways to write it code depending on the specific requirements of your project.