JavaScript Functions

Question 1

What is a function in JavaScript?

Answer 1

A block of code that may or may not return something in the code when it is called

Question 2

Describe the parts of a function definition.

Answer 2

Function ‘funtionname’ (parameter) {
rules
return;
}

Question 3

Describe the parts of a function call.

Answer 3

contains the function name followed by the list of values that are assigned to the parameter’s in place

Question 4

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

Answer 4

define is when the code is written and just exists while the call is when it is interpreted by the code

Question 5

What is the difference between a parameter and an argument?

Answer 5

Function parameters are the names listed in the function’s definition. Function arguments are the real values passed to the function.

Question 6

Why are function parameters useful?

Answer 6

allow a function to perform tasks without knowing the specific input values ahead of time

Question 7

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

Answer 7

It causes the function to return a value you can use in the program and prevents any more code in the functions block from being run