5.1. Write a Function

A function is nothing more than a reusable block of code. Functions are primarily designed to let you save development time. Rather than rewrite and retest similar code over and over, you can encapsulate the code into a function and then simply call it whenever you need its capabilities.

ActionScript includes a set of global functions to perform certain common tasks. Global functions are written into the core ActionScript code and can be accessed directly in your code.