javascript-functions

Question 1

What is a function in JavaScript?

Answer 1

It is a set of statements that performs a task or calculates a value that can take 0 or more input and has the option to return a value.

Question 2

Describe the parts of a function definition.

Answer 2

1. The function keyword
2. An optional name
3. zero or more parameters
4. a code block
5. an optional return statement

Question 3

Describe the parts of a function call.

Answer 3

1. function’s name

2. comma-separated list of zero or more arguments surrounded by () parentheses

Question 4

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

Answer 4

Defining a function details the steps of the task to perform while calling a function runs the code and performs the task.

Question 5

What is the difference between a parameter and an argument?

Answer 5

The parameter is the variable name and the argument is the value.

Question 6

Why are function parameters useful?

Answer 6

Parameters allow us to pass information or instructions into functions and procedures.

Question 7

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

Answer 7

1. produces a value

2. exits a function block and no code after the statement is executed