Defining and Calling Functions

Defining:

• JavaScript function declarations are made by using the function keyword.
• Functions can also be defined by saving function expressions to a variable. "Arrow" functions are commonly used in this way.

Calling:

• When a function is defined, it is not yet executed.
• To call and invoke a function's code, use the function's name followed by parentheses: functionName().

Visit the following resources to learn more:

• Defining Functions
• Calling Functions
• Function Definitions