What is the different between a parameter and a local variable?

Question

Apologies for what must seem like a very stupid question.

I\'m currently working through codecadamy, and this is throwing me off:

 var greet         


        

Answer 1

In your function definition:

function(name) {

name is already being declared. It is a parameter for the function. If you want to change name, you can, but you don't need to use var to declare it as a new variable.

On the other hand, if you wanted to add, say, flavor, you should use var then since it is not already defined.

var flavor = 'savory';

In this case, flavor is a local variable and name is a parameter. A parameter is a type of local variable that is declared with the function declaration, but a local variable isn't necessarily a parameter because it may be declared elsewhere in the function.