javascript-functions

Question 1

What is a function in JavaScript?

Answer 1

a function in javaScript is a tool that lets you package lines of code that perform a certain task, then get’s names so it can be reused more than once.

Question 2

Describe the parts of a function definition.

Answer 2

function keyword followed by the function’s optional name followed by parentheses that house a/multiple parameters (variables). followed by curly braces that signify the start of the code block. and within the braces there is code

function add() {}

Question 3

Describe the parts of a function call.

Answer 3

name of the function directly followed by an argument/s (if it accepts any), followed by a semi colon

Question 4

When comparing them side-by-side, what are the differences between a function call and a function definition?

Answer 4

a function call does not include the function keyword.

a function call is passed with an argument, not a parameter.

Question 5

What is the difference between a parameter and an argument?

Answer 5

A parameter is not real data.
A parameter is only included in the function definition.

An argument is only included when calling the function
An argument is real input.

Question 6

Why are function parameters useful?

Answer 6

A parameter acts as a placeholder for an argument. they serve as a reminder for the type of data that should be passed as arguments when the function is called. A single tool that allows your function to be used in many situations

Question 7

What two effects does a return statement have on the behavior of a function?

Answer 7

a return statement exits the function and causes a function to produce a value that can be used outside of the function