Hi all, Functions are one of the fundamental building blocks in JavaScript. 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 input and return an output where there is some obvious relationship between the input and the output. To use a function, you must define it somewhere in the scope from which you wish to call it. --What is a Function? A function is a reusable set of instructions that can be executed when called. Functions help developers break large programs into smaller and manageable parts. Example: function greet() { console.log("Hello, World!"); } greet(); In this example, the greet() function prints "Hello, World!" when it is called. --Why Use Functions?…