Javascript-closures

Question 1

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

myFunction()();

Answer 1

return another function.

Question 2

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

Answer 2

function that takes single param, and then there is a function that takes no params, and it returns the outter params.

Question 3

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

Answer 3

when the function is defined.

Question 4

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

Answer 4

closures