Functions

Question 1

A function declaration consists of?

Answer 1

The function keyword.

The name of the function, or its identifier, followed by parentheses.

A function body, or the block of statements required to perform a specific task, enclosed in the function’s curly brackets, { }.

Question 2

A function declaration does not ask the code inside the function body to run, it just declares the existence of the function. The code inside a function body runs, or executes, only when the function is called.

To call a function in your code, you type the function name followed by parentheses.

Answer 2

This function call executes the function body, or all of the statements between the curly braces in the function declaration.
e.g.
function sayThanks() {
console.log(‘Thank you for your purchase! We appreciate your business.’)
}

sayThanks();
^ This will print out whatever is in the function body / all inbetween { }

We can call the same function as many times as needed. e.g.
sayThanks();
sayThanks();
sayThanks();

Question 3

Function calculateArea(width, height) {
console.log(width * height);
}