What is the primary advantage of using custom functions in ColdFusion?

The primary advantage of using custom functions in ColdFusion is code reusability and modularity. A custom function is a block of code that performs a specific task and can be called repeatedly from different parts of your ColdFusion application. This contrasts with code that might be duplicated across multiple pages or tags. Reusability means you write the code for a task once, and then you can use it many times without rewriting it. Modularity refers to breaking down a complex application into smaller, self-contained units (the functions). Consider a scenario where you need to calculate the sales tax for an item in several different parts of your applicati....