Closures

Question 1

What must the return value of myFunction be if the following expression is possible?
myFunction()();

Answer 1

a function

Question 2

What does this code do?
const wrap = value => () => value;

Answer 2

assigns the anonymous arrow function to wrap

Question 3

In JavaScript, when is a function’s scope determined; when it is called or when it is defined?

Answer 3

Defined

Question 4

What allows JavaScript functions to “remember” values from their surroundings?

Answer 4

Closures