Functions in JavaScript

Question

What's the difference between:
#Declaring a named function eg: function foo(){};
and
#Declaring an anonymous function and assigning it to a variable eg: var foo = function(){};

Answer 1

The former allows hoisting, which means you can use a function at the top of the code before it is declared somewhere in the bottom.

The latter doesn't.

Answer 2

Both functions would be called as foo(). There isn't much of a difference. However, you could declare like this:

const foo = function() {}

to make foo() immutable, or unchangeable.