Declaring and Creating Functions

Functions Overview

Declaring and Creating Functions

🙋 Need help? Ask an expert now!

Each function has a name that is used to call the function. The name usually describes the purpose of the function and what it does. Functions in JavaScript do not explicitly define return type, so the return; statement is not necessary. Functions can be defined in three ways:

  • using the constructor of the Function object
  • by function declaration
  • by function expression

The code sample above shows 3 different methods for declaring a function. As mentioned above, each function has a name that describes its purpose. The functions are called using the method name and a set of parenthesis. The most common way of creating a method is through function declaration. This is the ideal method as the statements inside the functions are clearly shown along with the parameters (if any).

Edit Me on GitHub!

Application Question

Which of the following is a valid function declaration?