JavaScript Closure

Question 1

In JavaScript, when is scope determined?

Answer 1

When the app renders

Question 2

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

Answer 2

closure

Question 3

What values does a closure contain?

Answer 3

variables within the scope when a function is created(in the parent function/container)

Question 4

When is a closure created?

Answer 4

when a function is created

Question 5

How can you tell if a function will be created as a closure?

Answer 5

nested function that needs a variable outside of its scope

Question 6

In React, what is one important case where you need to know if a closure was created?

Answer 6

Use Effects/dependencies