JavaScript Functions Program

Here's a simple JavaScript program that demonstrates how to create and use functions:

This program creates a function called myFunction using the function keyword. The function contains a single statement that uses the document.write() method to display the text "Hello World!" on the screen.

The function is called by its name followed by parentheses (). In this case, the function is called myFunction()

Functions are useful for encapsulating a specific piece of logic or functionality, which can then be reused throughout the program.

You can use any text editor that supports HTML and JavaScript like Visual Studio Code, Sublime Text, Atom or any other text editor that supports javascript.

This program is a basic introduction to functions in JavaScript, and it can be used as a starting point for learning more about how to create and use functions in JavaScript, and how to pass and return values from functions.